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 data set contains the observations 3, 8, 4, 5, 3, 4, 6. A. Find the sample mean. B. Find the sample variance.
Which of the following data sets has the smallest standard deviation? a. 1, 2, 3, 4, 5 b. 100, 100, 100, 100, 100 c. 100, 101, 102, 103, 104 d. 2, 4, 6, 8, 10
Given the sample data {1, 1, 3, 4, 6}.Calculate the mean.Calculate the standard deviation.
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.
According to a Boston Globe story, only about 1 in 6 Americans have blue eyes, whereas in 1900 about half had blue eyes. (Source: Data from The Boston Globe on October 17, 2006.) a. For a random sample of 100 living Americans, find the mean and standard deviation of the proportion that have blue eyes. b. In a course you are taking with 100 students, half of the students have blue eyes. Would this have been a surprising result if the sample were a random sample of Americans? Answer by finding how many standard deviations that sample result falls from the mean of the sampling distribution of the proportion of 100 students who have blue eyes. c. In part b, identify the population distribution, the data distribution, and the sampling distribution of the sample proportion.
The average McDonald's restaurant generates $3.3 million in sales each year with a standard deviation of 0.8. Skyler wants to know if the average sales generated by McDonald's restaurants in North Carolina is different than the worldwide average. He surveys 25 restaurants in North Carolina and finds the following data (in millions of dollars): 2.3, 0.9, 2.2, 2.8, 3.1, 3.1, 2.3, 2.6, 2.7, 2.7, 3.1, 3.9, 4.1, 4, 4.5, 1.8, 4.3, 2.7, 3.9, 3.5, 3.2, 1.7, 3.5, 2.9, 2.1 Perform a hypothesis test using a 4% level of significance. Step 1: State the null and alternative hypotheses. Но: ? ? v Ha: ? v (So we will be performing a Select an answer v 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 Select an answer with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v P(? v…
A company wants to assess the average time it takes for customers to complete a particular task on their website. They collect the following data from a sample of 10 customers: 5, 6, 7, 8, 9, 10, 10, 11, 12, 13 minutes. Calculate the sample mean and standard deviation for this data.
According to the South Dakota Department of Health, the number of hours of TV viewing per week is higher among adult women than adult men. A recent study showed women spent an average of 36 hours per week watching TV and men, 30 hours per week. Assume that the distribution of hours watched follows the normal distribution for both groups and that the standard deviation among the women is 4.8 hours and is 5.2 hours for the men. A. What percent of women watch TV for less than 38 hours per week? B. What percent of men watch TV for more than 25 hours per week? C. How many hours of TV do the three percent of women who watch the most TV per week watch? Find the comparable value for the men.
The highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find the mean, median, mode, and standard deviation. Round to one decimal place as needed.20, 22, 26, 27, 30, 31, 34, 34Mean = Median = Mode = Standard Deviation =
There are 10 employees in a particular division of a company. Their salaries have a mean of $70,000, a median of $55,000, and a standard deviation of $20,000. The largest number on the list is $90,000. By accident, this number is changed to $900,000. What is the value of the mean after the change? Select one: a. $170,000 b. $151,000 c. $70,000 d. $90,000 e. $160,000
Please answer.
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.

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