Two grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just beenmarketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and prayed with Pernod 5, and three others were sprayed with Action. Whenthe grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 400 vines sprayed with Action were checked. The resultsare:InsecticideNumber of vines checkedNumber of infested vinesPernod 540024Action40040Suppose the we want to test at the .05 significance level, whether we can conclude that there is a difference in the proportion of vines infested using Pernod 5 asopposed to Action. Which of the following would be incorrect ?Select one:a.Ho: Tp = Ma ; H1: np # Mab. All answers are correct.O c.The proportion infested is not the same in the two fieldsO d.P.=400 + 40024+ 40=0.080.06 – 0.10-2.09(0.08)(0.92) (0.08)(0.92)400400

Name: Two grapevines must be sprayed at the beginning of the growing season
Uploaded: 2024-03-20T07:06:27.000Z
Channel: Bartleby
Description: Two grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just beenmarketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and p

A z-test for two proportions is a hypothesis test that attempts to make a claim about the…

Math

Statistics

arketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and prayed with Pernod 5, and three others were sp grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 400 vines sprayed with Action v secticide Number of vines checked Number of infested vines rnod 5 400 24 tion 400 40 ppose the we want to test at the .05 significance level, whether we can conclude that there is a difference in the proportion of vines infester posed to Action. Which of the following would be incorrect ? ct one:

arketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and prayed with Pernod 5, and three others were sp grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 400 vines sprayed with Action v secticide Number of vines checked Number of infested vines rnod 5 400 24 tion 400 40 ppose the we want to test at the .05 significance level, whether we can conclude that there is a difference in the proportion of vines infester posed to Action. Which of the following would be incorrect ? ct one:

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A random sample of 9 technicians working in a shop repair 15, 11, 9, 12, 15, 12, 13, 16 and 13 small…

Q: A clinical trial is planned yo compare an experimental medication to lower blood pressure to a…

A: In this scenario, it is appropriate to use paired t test. Hypotheses and level of significance: The…

Q: Consider random samples of size 1000 from a population with proportion 0.65. Find the standard error…

Q: Random samples of 250 male and 170 female at a certain barangay were asked whether they favor…

A: Given Information: Let 1 be the subscript of males and 2 be the subscript of females n1 = 250 n2 =…

Q: he manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and…

A: Given : Sr. No. Before(x) After (y) 1 12 10 2 14 13 3 13 13 4 11 10 5 9 8 6 15 12 7…

Q: Suppose 110 geology students measure the mass of an ore sample. Due to human error and limitations…

Q: A new medication is being developed to treat severe morning sickness in pregnant women. The…

Q: ravis does reserch and get average weight in pound of the lobsters location was 2.1 lbs and…

Q: The sample is actually 55. what is the critical value?

A: It is given that the sample is 55 and there are three treatments.

Q: William Industries has decided to use a p-Chart with 3-sigma control limits to monitor the…

A: Want to use a p-chart with 3 sigma control limits to monitor the proportion of defective castings…

Q: Two popular brands of tires for tractor-trailers are the Puma and the Eternal. Ann is a buyer for a…

A: Given Let sample 1 denote Puma tires. Sample size, n1=14 Sample mean, x¯1=54.71 Sample variance,…

Q: A physical therapist believes that men have higher blood pressure than women. He collected the blood…

A: We know that, Test Statistic for Difference of two means is given by, t= ((X1 bar-X2…

Q: In a random sample of males, it was found that 223 write with their right hands and 21 do not. In a…

A: Given: The data on right-handedness among males and among females. Let X be the number of males who…

Q: A A researcCher asks participants to taste each of three meals and to choose the one they like best.…

A: Given: Low calorie Moderate Calorie High Calorie f0 17 6 7 fe 10 10 10

Q: A test is made of Ho: μ = 100 vs. Ha : μ ≠ 100. Given a sample size of 100 and its mean of 97 and…

Q: 17. If the random variable Y has a chi-square distribution with 54 degrees of freedom, then what is…

Q: 10. We want to test a claim that the proportion of people with type 2 diabetes is higher than 0.09.…

A: Given,n=400x=45p^=xnp^=45400=0.1125H0:P=0.09H1:P>0.09

Q: Temperature (°F) at 8 AM 98.3 98.7 97.4 97.3 97.6 Temperature (°F) at 12 AM 98.9 99.5…

A: The following information has been provided: Temperature (°F) at 8 AM Temperature (°F) at 12 AM…

Q: 4, s = 0.3, n = 15 ‚š = 152, s = 5.5, n = 50 9, x = 30.2, s = 3.8, n = 4 S = 52. n = 70 %3D

Q: In a random sample of males, it was found that 25 write with their left hands and 222 do not. In a…

A: Hypothesis is an assumption that is being tested.

Q: 5. To examine the effects of pets and friends in stressful situations, researchers recruited 40…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Calculate the quartiles (Q1, Q2, Q3). Q1= Q2= Q3= of 99,107,93,125,98,132,90,83,123,122

Q: Sam works at the JJ Electronics Factory. JJ produces the A23 electronic component. The length, X, of…

A: We have attempted only first 3 parts as per guidelines of Bartleby.

Q: How many subjects participated in an independent-samples t-test if a researcher reports, t (20) =…

A: Given information- We have given an independent-samples t-test. The value of test statistics is- t…

Q: 5. Which of the following changes will increase the power of a statistics test: a. Change alpha from…

A: The power value in a statistical test plays an important role, that it checks how probability that…

Q: The EPA recommends avoiding consumption of fish species if the mercury concentration is higher than…

A: Obtain the confidence interval for the mercury concentration: The concentration in a large random…

Q: The data represent the number of days off per year for a sample of individuals selected from ten…

A: Data given 20,26,40,36,23,42,35,24,30,33

Q: A new medication is being developed to treat severe morning sickness in pregnant women. The…

Q: Suppose 190 geology students measure the mass of an ore sample. Due to human error and limitations…

Q: True or False. A newly proposed endoscopy method used to screen for colon cancer is tested among a…

Q: Listed below are the numbers of years that archbishops and monarchs in a certain country lived after…

A: The data shows the number of years that archbishops and monarchs in a certain country lived after…

Q: Harvard University claims 64% of its Harvard Business School students earn internships on wall…

A: Given that p = 64% = 0.64 n = 6745 , X = 4435

Q: The average house has 9 paintings on its walls. Is the mean smaller for houses owned by teachers?…

A: Given data: Claim: Is the mean smaller for houses owned by teachers? Significance level = 0.05

Q: A gambler complained about the dice. They seemed to be loaded! The dice were taken off the table and…

A: Given: n = 300 Formula Used: Test-statistic χ2 = ∑(O-E)2E Where O = Observed value E = Expected…

Q: The table below shows the color and the model of cars purchased by 160 randomly selected customers…

A: For the given data Perform Chi square test

Q: The average person can predict the suit of a card from a deck of cards on average 25% of the time.…

A: The sample standard deviation us known as 10.Assumptions for performing a hypothesis test about mean…

Q: The lengths of adult males' hands are normally distributed with mean 187 mm and standard deviation…

A: Given that, Mean=187 Standard deviation=7 Here in the option they mentioned that group =18.

Q: The lengths of adult males' hands are normally distributed with mean 192 mm and standard deviation…

Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.

Topic Video

Question

Two grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been
marketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and prayed with Pernod 5, and three others were sprayed with Action. When
the grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 400 vines sprayed with Action were checked. The results
are:
Insecticide
Number of vines checked
Number of infested vines
Pernod 5
400
24
Action
400
40
Suppose the we want to test at the .05 significance level, whether we can conclude that there is a difference in the proportion of vines infested using Pernod 5 as
opposed to Action. Which of the following would be incorrect ?
Select one:
a.Ho: Tp = Ma ; H1: np # Ma
b. All answers are correct.
O c.The proportion infested is not the same in the two fields
O d.
P.=
400 + 400
24+ 40
=0.08
0.06 – 0.10
-2.09
(0.08)(0.92) (0.08)(0.92)
400
400

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Data Collection, Sampling Methods, and Bias$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

A coffee shop relocates to Italy and wants to make sure that all lattes are consistent. They believe that each latter has an average of 5 oz of espresso. If this is not the case, they must increase or decrease the amount. They took a random sample of 10 lattes and the following are the ounces of espresso 15, 17, 15, 20, 12, 10, 19, 14, 19, 20 Use alpha = .05 -State the hypothesis- The level of significance, one/two-tailed test, degrees of freedom-statistical test-computation-Decision Rule- Reject Ho or Failed to reject Ho-Conclusion
A company manufactures electrical components and today they are producing 220-ohm carbon film resistors. A sample of 8 resistors was taken from the production line and were tested. Below are the measured resistance of the 8 resistors. [220.8, 221.9, 223.2, 219.1, 222.8, 219.2, 219.4, 219.5] Consider the two-sided hypothesis test for the mean resistance: Ho : µ = 220 vs Hj : µ # 220 Calculate the test statistic for the observed data for this hypothesis test. Give your answer to 3 decimal places. Test statistic: to 3 d.p. What is your hypothesis decision given that the manufacturing company is happy with a 5% significance level of the test? Hypothesis Decision: (No answer given) You may use the following quantile values from the Student-t distribution: df 7 8 pt(0.900, df) 1.415 1.397 1.383 pt(0.950, df) 1.895 1.860 1.833 pt(0.975, df) 2.365 2.306 2.262
Researchers wanted to know if therapy could help smokers quit smoking. Of the 71 smokers they tested, 39 were smoking one year after treatment. Use a 0.05 significance level to test the claim that the majority are smoking one year after treatment. What is/are the critical value(s)? ттT Arial 3 (12pt) v TE -E · -
In the US, 46.6% of all people have type O blood, 39.6% have type A blood, 10% have type B blood and 3.8% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 803 millionaires. What can be concluded at the significant level of ALPHA = 0.01. Round answers to 4 decimal places.1) State the hypotheses: 2) You drew 803 samples, and the observed frequencies are recorded below. Find the expected values. Blood Type ObservedFrequency ExpectedFrequency O 374 A 297 B 73 AB 59 The test-statistic for this data = The p-value for this sample = The p-value is greater than � less than (or equal to) � 3) Base on this, we should hypothesis As such, the final conclusion is that... Based on the sample data, there is sufficient evidence to claim that the distributions of blood types are not the same between the general population and the millionaires at…
A random sample of 100 male employees showed that 42 are working from home while a random sample of 100 female employees showed that 63 are working from home. Are the two population proportions equal? Test at alpha=0.05. What is Ho and Ha? And what is the test statistic value for this test? Based on the test statistic value, what is your decision?
Find the proportion of N.d. observations with a zz-score between z_1 =z1= -2.45 and z_2 =z2= 2.71. Give your answer to four decimal places.
Answer the following with the red hightlights. Use the second image to determine the test procedure and p-value
Calculate the test-statistic for each of the following
A sample of 100 clients of an exercise facility was selected. Let X = the number of days per week that a randomly selected client uses the exercise facility. Frequency 2 1 15 30 3 27 4 10 8 6. 8 Find the 80th percentile.
Arandom sample of 15 individuals representing three different types of music has been observed for the frequency with which they listen to that music over the month. Fill in the ANOVA table. Be sure to round to the second decimal.
The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box, with σ = 10. A random sample of 90 matchboxes shows the average number of matches per box to be 42.8. Using a 1% level of significance, can you say that the average number of matches per box is more than 40? What is the value of the sample test statistic?