Suppose you want to test the claim that μ1 > μ2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of α = 0.10, when should you reject H0? n1 = 35 n2 = 42 x1 = 29.23 x2 = 31.78 s1 = 2.9 s2 = 2.8

Suppose you want to test the claim that μ1 > μ2. Two samples are randomly selected from each population. The sample statistics are given below. At a level of significance of α = 0.10, when should you reject H0? n1 = 35 n2 = 42 x1 = 29.23 x2 = 31.78 s1 = 2.9 s2 = 2.8

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: Only about 16% of all people can wiggle their ears. Is this percent higher for millionaires? Of the…

Q: Find the standardized test statistic t for a sample with n = 10, xbar= 12.7, s = 1.3, and α = 0.05…

Q: The recidivism rate for convicted sex offenders is 16%. A warden suspects that this percent is…

A: We are authorised to answer three subpart at a time, since you have not mentioned which part you…

Q: Students collected the weights of a random sample of 28 Chips Ahoy! cookies. They want to perform a…

A: We have given that , Sample Size = 28 , Mean = 11.078 , Sample Standard deviation = 0.532 , At…

Q: The following information is obtained from two independent samples selected from two populations. n…

A: Given,n1=250n2=240x¯1=5.35x¯2=4.42σ1=1.65σ2=1.63

Q: In a test of H0: μ = 16.7 against HA: μ > 16.7, the sample data with sample size 50 yielded a test…

A: From the provided information, The hypotheses are as follow: H0: µ = 16.7 HA: µ > 16.7 Sample…

Q: Only about 16% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: From the provided information, Population proportion (p) = 0.16 Sample size (n) = 335 Out of which…

Q: You are testing Ho : p = .4 vs H1:P > .4. You have a sample percentage =.41 and a critical number…

A: Given: Critical Value = 0.43 H0: p = 0.4H1: p > 0.4p^=0.41n=100

Q: 9% of all Americans suffer from sleep apnea. A researcher suspects that a higher percentage of those…

A: 1)

Q: A random sample of size 16 and mean 30 was selected from normal distribution if we want to test that…

A: Given that, sample size n=16 mean =30 population variance σ2=25 Level of significance α=0.05 The…

Q: Suppose you are using α = 0.05 to test the claim that μ>13 using a P-value. you are given the sample…

Q: Consider a random sample of size n from a normal distribution with unknown mean u and unknown…

Q: A random sample of 16 statistics examinations from a large population was taken. The average score…

A: Here we need to obtain the critical value for the given hypothesis test. Also given that the…

Q: Given a critical t score of -2.33 and t observed being -2.01, the decision you should make is…

A: It is given that the critical t score is -2.33 and the observed t value is -2.01.

Q: Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 47 and a level of…

A: We have find p-value and test statistics..

Q: A one sample t-test is conducted with Ha: µ = 10. If t-stat = -2.2 andn= 10, the closest p-value is…

A: GivenHa:μ=10t-stat =-2.2n=10

Q: 17% of all college students volunteer their time. Is the percentage of college students who are…

Q: Only about 16% of all people can wiggle their ears. Is this percent lower for millionaires? Of the…

A: Given information- Population proportion, p = 0.16 Sample size, n = 357 Significance level, α = 0.01…

Q: 18% of all college students volunteer their time. Is the percentage of college students who are…

A: Given, 18% of all college students volunteer their time. Of the 300 randomly selected students who…

Q: r > ≠ = ≠ = (Please enter a decimal) The test statistic ? z t = (please show your answer to 3…

A: Let X be the number of millionaires who could wiggle their ears. Of the 380 millionaires surveyed,…

Q: Assume that you want to test the claim that the paired sample data come from a population for which…

Q: A sample of n=24 is selected from a population = 120 and σ = 40. If the sample mean is 130, what is…

A: It is given that the population mean, μ=120 and standard deviation, σ=40. For the sample size of 24,…

Q: 13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The results of a study that used an independent samples t-test was t(28) = 2.14, p = .01. Based on…

A: t(28) means that degree of freedom = 28 Now, degree of freedom for a t-test one sample case = n-1.

Q: 6. Test the claim that μ > 2.85. Use a significance level of .01. The sample data consists of 9…

Q: Use the following information to answer the next four problems: Test whether p1>p2.The sample data…

A: Solution-: Given: n1=258,n2=311,x1=116,x2=135,α=0.10 We want to find, (a) Test statistic=? (b)…

Q: Are blonde female college students just as likely to have boyfriends as brunette female college…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: A sample of n = 10 scores has a mean of M = 3. What is ΣX for this sample?

A: Solution: From the given information, M=3 and n=10.

Q: Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 47 and a level of…

A: given data,μ>25.6n=47, df=n-1=47-1=46α=0.01

Q: Suppose you want to test the claim that H =H2. Two samples are randomly selected from normal…

A: Given : n1=14n2=12α=0.05The hypothesis is :H0:μ1=μ2 Vs Ha:μ1≠μ2We want to find critical region for…

Q: In a test of H0: p = .43 versus Ha: p ≠ .43, a sample of size 1500 leads to a p-value of 0.087.…

A: Here from the given hypothesis test and the p value we need to arrive at the correct conclusion from…

Q: t the claim below about the mean of the differences for a population of paired data at the level of…

A: given data, μd<0α=0.01d=1.4sd=3.8n=19df=n-1=19-1=18we have to answer for the given datahere in…

Q: Determine the P-value for this hypothesis test. Group of answer choices 0.978 0.013 0.027 0.321…

Q: The recidivism rate for convicted sex offenders is 16%. A warden suspects that this percent is…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: You wish to test the following claim (Ha) at a significance level of a = 0.05. H.:µ1 = µ2 Ha:µ1 < µ2…

Q: We want to test whether the population variance of machine component mass meets the requirement of…

A: Claim: The population variance of machine component mass meets the requirement of 4 kg2.

Q: Q5.5 Calculate the t-test statistic for this hypothesis test. Round your answer to two decimal…

A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

Q: A local restaurant claims that the waiting time for its patrons to be served is the lowest in the…

Q: sample 1 (M cars) : n1 = 24, X ̄1 = 29.8, s1 = 2.56 sample 2 (J cars) : n2 = 28, X ̄2 = 27.3, s2 =…

A: Given Data : For Sample 1 x̄1 = 29.8 s1 = 2.56 n1 = 24 For Sample 2…

Q: In a test of hypothesis, the null hypothesis is that the population mean is less than or equal to 32…

A: The null and alternative hypothesis for the test is given as:where, denotes the population mean.The…

Q: You believe both populations are normally distributed, but you do not know the standard deviations…

A: Given n1=20,x¯1=60.9,SD1=6.2 and n2=15,x¯2=76.9,SD2=18.6.

Q: You wish to test the following claim at a significance level of α=0.001α=0.001. Ho:μ1=μ2…

A: Hypotheses are as follows:Null hypothesis Alternative hypothesis The level of significance is .There…

Q: 15% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

Q: You are given the null and alternative hypotheses H0: μ1≥μ2 and HA:μ1tα/2=____ B. t>tα = C.…

A: Given :n1=12,n2=14X1=577,X2=591s1=27.5,s2=26.8 Assuming X1 and X2 as mean of the samples.

Q: e mterested IA studying whéther scent affects spatial reasoning abilities. You decide to test…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…

Q: Using the results from Example 4.26, µ = 1.14 and o = 0.39, would it be appropriate to use the…

A: Given information: The mean and standard deviation of the given geometric distribution is µ = 1.14…

Q: Two sample T for Men vs Women SE Mean A physical therapist wanted to know whether the mean step…

A: To compare the means of two independent population, two sample t-test is conducted. When the…

Q: With 0.05 significance level, H1: p > 0.5, and the value of test statistics is z = 1.25. Then

Q: 10% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those…

A: The provided information are:

Question

n1 = 35

n2 = 42

x1 = 29.23

x2 = 31.78

s1 = 2.9

s2 = 2.8

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: Given information

VIEW

Step 2: Calculation

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

14% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those who live in the inner city have sleep apnea. Of the 359 people from the inner city surveyed, 43 of them suffered from sleep apnea. What can be concluded at the level of significance of αα = 0.05? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: Ho: ? μ p Select an answer = ≠ > < (please enter a decimal) H1: ? p μ Select an answer < > = ≠ (Please enter a decimal) The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject fail to reject accept the null hypothesis. Thus, the final conclusion is that ... The data suggest the populaton proportion is significantly smaller than 14% at αα = 0.05, so…
Consider a random sample of size n from a normal distribution with unknown mean u and unknown variance o?. Suppose the sample mean is X and the sample variance is S?. n = 16, the observed sample mean i is 8.9. the observed sample variance s is 25 and µo = 10.5. Suppose we now want to test Ho : o² = of versus H1 : o? + of. Which of these test statistics should we use? Select one: O a. W = (n-1)s O b. Z X-P O c. T = S/n Let of = 36. What is the (appropriate) observed test statistic? Give answer to three decimal places.
A psychologist would like to know whether the 4 seasons have any consistent effect on Amazon shopping. In the middle of each season, a psychologist selects a random sample of n=23n=23 students. Complete the following, ANOVA summary table (α=0.10α=0.10). Round values for SS and MS to 3 decimal places as needed. Round p-value to 4 decimal places. Source SS df MS F P Between 1.339 Within 1090.32 TOTAL
Test the claim below about the mean of the differences for a population of paired data at the level of significance x. Assume the samples are random and dependent, and the populations are normally distributed. Claim: μ ≥0; x = 0.10. Sample statistics: d= -2.4, s = 1.3, n = 19 Identify the null and alternative hypotheses. Choose the correct answer below. OA. Ho: Hd 0 The test statistic is t = (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) Since the P-value is the level of significance, C OB. Ho: Hd>0 Ha: Hd ≤0 O D. Ho: Hd #0 Ha: Hd = 0 OF. Ho: Hd 20 Ha: Hd <0 the null hypothesis. There statistically significant evidence to reject the claim.
A random sample of size 25 from a normal population has a mean of x-bar = 62.8 and s = 3.55. If you were to test the following hypothesis at the .05 level of significance. The value of the test statistic is Họ: H = 60 %3D Họ: H+60 O-3.94 O 0.79 -0.79 O 3.94 O 2.8
What is the critical value? A. 2.33 B. 2.492 C. 2.575 D. 2.797
Plz help asap 46
Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is µd = 0. x / 734 13 y / 99 8 7 13 Compute the value of the test statistic. (Round your answer to nearest hundredth. Hint: The correct test statistic is positive.)
A marketing researcher would like to compare the mean amounts that men and women spend on Christmas gifts. Independent random samples were taken from each group. He would like to conduct a test to determine if women spend more on average. If the null hypothesis is Ho : µM - µf = 0, what is the alternative hypothesis? ge 2: ge 3: OH1 : µM – HF 0 4 OH1 : µM – HF # 0 Page 5: Next Page Dege 10of15
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.6 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 14 samples is 4.9 ppm with a variance of 1.2 Does the data support the claim at the 0.01 level? Assume the population distribution is approximately normal. Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places.
Only about 15% of all people can wiggle their ears. Is this percent different for millionaires? Of the 398 millionaires surveyed, 40 could wiggle their ears. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer > < ≠ = (please enter a decimal) H1:H1: ? μ p Select an answer < = ≠ > (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 3 decimal places.) The p-value is ? ≤ > αα Based on this, we should Select an answer fail to reject accept reject the null hypothesis. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly different from 15% at αα = 0.05, so there is statistically insignificant evidence to conclude that the…
Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 47 and a level of significance of, a=0.01 when should you reject H0?