The number of peas in a pod varies from farm to farm.In a random sample of 50 pods from farm A, there wasa mean of 4.2 peas per pod with a standard deviationof 1.03 peas per pod. In a random sample of 50 podsfrom farm B, there was a mean of 5.1 peas per podwith a standard deviation of 1.92 peas per pod.Agricultural researchers want to find evidence whetherthe pods from farm B have more peas per pod onaverage.What is the appropriate hypothesis test?a paired t-test for a mean differencea one-sample z-test for a population meana two-sample t-test for a difference in meansa one-sample z-test for a population proportiona two-sample z-test for a difference in proportions

Given Information: The random sample of size from farm A, n1=50 The sample mean of peas per pod in…

Answered: The number of peas in a pod varies from…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 14 blue crabs from Location A contain a mean of 190 milligrams of fish and a standard deviation of 36 milligrams. The stomach contents of a sample of 11 blue crabs from Location B contain a mean of 186 milligrams of fish and a standard deviation of 41 milligrams. At a= 0.10, can you support the researcher's claim? Assume the population variances are equal. Complete parts (a) through (d) below. (a) Identify the null and alternative hypotheses. Choose the correct answer below. OA. Hg: H -H2=0 B. Ha: H - H2 so OC. Ho: H -H220 O D. Ho: H -H2 Z1 - :"H (b) Find the standardized test statistic for u, -H2- 0= ZH - :"H t= (Round to three decimal places as needed.)
At MJC's intramural sports program, the time to run one mile is recorded for 200 male students in the program. These times are approximately normal with mean 8 minutes and standard deviation 1 minute. For the same intramural sports program at the same college, the time to run one mile is recorded for 50 female students in the program. These times are approximately normal with mean 7.5 minutes and standard deviation 2 minutes. Devon participates in the intramural program for men. His best time to run the mile is 6.6 minutes. Kendall participates in the intramural program for women. Her best time to run the mile is 5.7 minutes. Who ran the mile faster relative to their gender? O Kendall ran the mile faster
a florist ahs a floral shop in miami and anotherin san diego. Teh miami shop has a mean daily sales of 4,932.00 with a standard deviation of 264. Teh san diego shop has a mean daily sales of 4582.00 with a standard deviation of 186. On a random day the miami shop had sales of 5240 and teh san diego shop of 4848. Which store had the better sales that day? Which teh higher z score?
compute the range, variance, and standard deviation for the two samples
A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 13 blue crabs from Location A contain a mean of 196 milligrams of fish and a standard deviation of 39 milligrams. The stomach contents of a sample of 11 blue crabs from Location B contain a mean of 187 milligrams of fish and a standard deviation of 43 milligrams. At α=0.10, can you support the researcher's claim? What is the Standardized Statistic? What is the P - Value?
For a study conducted by the research department of a pharmaceutical company, 235 randomly selected individuals were asked to report the amount of money they spend annually on prescription allergy relief medication. The sample mean was found to be $17.80 with a standard deviation of $4.30 . A random sample of 250 individuals was selected independently of the first sample. These individuals reported their annual spending on non-prescription allergy relief medication. The mean of the second sample was found to be $18.20 with a standard deviation of $4.00 . As the sample sizes were quite large, it was assumed that the respective population standard deviations of the spending for prescription and non-prescription allergy relief medication could be estimated as the respective sample standard deviation values given above. Construct a 90% confidence interval for the difference −μ1μ2 between the mean spending on prescription allergy relief medication ( μ1 ) and the mean…
A certain prescription medicine is supposed to contain an average of 250 parts per million (ppm) of a certain chemical. If the concentration is higher than this, the drug may cause harmful side effects; if it is lower, the drug may be ineffective. The manufacturer runs a check to see if the mean concentration in a large shipment conforms to the target level of 250 ppm or not. A simple random sample of 100 portions is tested, and the sample mean concentration is found to be 247 ppm. The sample concentration standard deviation is s = 12 ppm. Suppose that the p-value was 0.0259. What is the appropriate conclusion to make if α = 0.05? Group of answer choices Fail to reject H0. We have insufficient evidence to conclude that the mean concentration is different from 250 ppm. Fail to reject H0. We have sufficient evidence to conclude that the mean concentration is less than 250 ppm. Reject H0. We have insufficient evidence to conclude that the mean concentration is less than 250…
A manufacturer is producing metal rods, whose lengths are normally distributed with a mean of 65.0 cm and a standard deviation of 0.3 cm. If 2000 metal rods are produced, how many will be between 64.5 cm and 65.3 cm in length? There will be rods between 64.5 cm and 65.3 cm in length.
The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one school year. The speed limit on that part of Reynolds Rd is 20 mph. The mean of the speed readings was 24.19 mph, with a standard deviation of 3.56 mph.
A study was being done at our District to see who takes more units per semester, students at Cypress College or students at number of units they took per semester was 13.1 units with a standard deviation of 2.4 units. They randomly selected a sample of 65 Cypress College students and found that the mean number of units they took per semester was 11.6 units with a standard Fullerton College. To test this, the researchers randomly selected 60 Fullerton College students and found that the mean deviation of 3.7 units. Test the claim that the mean number of units is more for Fullerton College students than Cypress College students at the a=0.05 level of significance. Calculator Function [ Select ] [ Select ] X^2-Test T-Test 2-SampFTest 2-PropZTest ANOVA 2-SampT Test [ Select ] sufficient evidence that the mean number of units is (Select] for Fullerton College students than Cypress College students.
Salvatore, as the director of a regional bank, is concerned about the wait times of customers at the four branches. He randomly selects 48 patrons at each branch and records the waiting time for each patron. The results of the samples are shown below. The Alvrine branch has a mean waiting time of 13.49 minutes with a standard deviation of 1.97 minutes.The Durham branch has a mean waiting time of 12.61 minutes with a standard deviation of 2.89 minutes.The Hanover branch has a mean waiting time of 11.06 minutes with a standard deviation of 2.46 minutes.The Mascomonet branch has a mean waiting time of 12.89 minutes with a standard deviation of 3.12 minutes.
A researcher claims that the stomachs of blue crabs from Location A contain more fish than the stomachs of blue crabs from Location B. The stomach contents of a sample of 16 blue crabs from Location A contain a mean of 192 milligrams of fish and a standard deviation of 37 milligrams. The stomach contents of a sample of 11 blue crabs from Location B contain a mean of 189 milligrams of fish and a standard deviation of 45 milligrams. At α=0.01, can you support the researcher's claim? Assume the population variances are equal. Complete parts (a) through (d) below.

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