4. Lindvall's Nursery has 25-pound bags of mealworms for sale. The bag filling process isknown to be normally distributed and the standard deviation is designed to be 1.5pounds. Aaron Johannsson, Lindvall's Nursery's statistician, sampled 16 bags to see ifcustomers were getting the mealworms for which they were paying. The data is in thearray below.212324232228212324252525n6em The numbers above can be copied & pasted directly into Microsoft Excel®.272327a. What test should Johnson use to determine if customers were getting themealworms for which they paid? Is it a one-tailed or two-tailed test? Explain.b. Calculate the necessary statistics to perform that test.c. Using the 6-step hypothesis testing procedure, perform the test that Johnsonwould perform. Use a level of significance of 0.05. Comment on each step of the6-step hypothesis testing procedure; especially explain why a z-distribution can beused.d. Compute the p-value. Would the results of the hypothesis test change if the levelof significance was 0.01?

Answered: Image /qna-images/answer/30499a65-2773-4691-a55a-5c0cd30c5555.jpg

Answered: 4. Lindvall's Nursery has 25-pound bags…

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 primary measure of dispersion for sample data is the sample standard deviation, s. Choose the best option to explain what the meaning of the sample standard deviation is, in general. A. The distance between one observation and the mean. B. The average distance of an observation from the middle of the distribution. C. The average distance between observations in the sample. D. The distance between the third and first quartiles.
The average McDonald's restaurant generates $2.4 million in sales each year with a standard deviation of 0.7. Carissa wants to know if the average sales generated by McDonald's restaurants in New Mexico is different than the worldwide average. She surveys 18 restaurants in New Mexico and finds the following data (in millions of dollars): 2.1, 2, 2.9, 1.7, 1.8, 2.3, 2.1, 2.1, 3.3, 1.4, 1.6, 1.4, 1.4, 2.3, 2.6, 2.7, 2.7, 1.7 Perform a hypothesis test using a 8% level of significance. Step 1: State the null and alternative hypotheses. Ho: pv 2.4 Ha: Ev 2.4 (So we will be performing a two-tailed test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are normally distributed v with and distribution standard deviation distribution mean Step 3: Find the p-value of the point estimate. P(zv [ p-value = Step 4: Make a Conclusion About the…
According to one study, brain weights of men are normally distributed with a mean of 1.10 kg and a standard deviation of 0.12 kg. Use the data to answer parts (a) through (e). Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. Determine the sampling distribution of the sample mean for samples of size 3. Interpret your answer in terms of the distribution of all possible sample mean brain weights for samples of three men. The mean of the sample mean is µ, kg. (Type an integer or a decimal. Do not round.) The standard deviation of the sample mean is o, = kg. (Round to four decimal places as needed.) Interpret these answers in context. For the brain weights have a normal distribution with a mean of kg and a standard deviation of kg. (Type integers or decimals rounded to four decimal places as needed.) b. Repeat part (a) for samples of size 12. The mean of the sample mean is µ;…
1. According to one study, the average hours of sleep on a weeknight for men was 6.9 hours with a standard deviation of 1.5 hours. a. Find the proportion of men who sleep for more than 8 hours per night. b. Find the proportion of men who sleep for less than 6 hours per night. c. Find the proportion of men who sleep between 6-8 hours per night. d. Find the number of hours that represents the 90th percentile.
Construct a quantile graph. Explain why or why not the data set provided has a normal distribution: 5.5, 6.0, 6.4, 5.7, 7.5, 4.5, 5.5, 5.6, 6.5, 6.0, 5.0, and 6.0. include the graph and response.
The length of time it takes for a worker to perform certain task (in minutes) was recorded for 10 workers. The resulting data values were the following: 5, 3, 11, 7, 6, 9, 4, 8, 7, 10 Find the mean, median, mode, range, variance and standard deviation. In the answers for the mean, variance, and standard deviation leave one digit after decimal point. a. Mean = d. Range = b. Median = e. Variance = c. Mode = f. Standard deviation =
Consider the following data of 10 exams scores: 28, 57, 58, 64, 69, 74, 79, 80, 83, 85 1. The the mean, median, and mode 2. find the standard deviation without a graphing calculator. Show all your computations
what was the age distribution of prehistoric Native America? Extensive , anthropological studies in the southwestern United states gave the following information about a prehistoric extended family group of 82 members on what is now a native american reservation. for this community, estimate the mean age expressed in years, the sample variance, and the sample deviation. For the class 31 and over, use 35.5 as the class midpoint. 39,16, 20,7
Compare the following two sample data sets: A: 5,4,6,3,6,7A: 5,4,6,3,6,7 B: 6,5,7,6,1,8B: 6,5,7,6,1,8 Which data set has the greater sample standard deviation, and which data set has the greater range? Use the calculator if needed. Select the answer that is completely correct. The sample standard deviation of set B is greater. The range of set A is greater. The sample standard deviation of set A is greater. The range of set B is greater. The sample standard deviation of set A is greater. The range of set A is greater. The sample standard deviation of set B is greater. The range of set B is greater.
In a simple random sample of 26 Kentucky alum, 23 believe that, despite their title dreams falling short in the Final Four in Indianapolis, the 2015 Wildcats are still the greatest team assembled in the 21st century.Test the hypothesis that more than 81% of Kentucky alum believe that the 2015 Wildcats are the greatest team assembled in the 21st century at the 0.05 level 1.) What is the alternative hypothesis? 2.) What is the appropriate critical value? 3.) State your decision given a test statistic of 0.91. Reject H0 Fail to reject H0 Accept H0

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