Answer the following problem about hypothesis testing with up to four decimal places. The following data set shows the weekly advertising expenditure and sales of 12 retail merchants sellingface masks.CostSales4038520400253952036530475504404049020420505604052525480505101. Plot a scatter diagram. Does it appear that there is a linear relationship between advertising costand sales? Why or why not?2. Compute the correlation coefficient. (Round of to 4 decimal places.)3.Interpret the computed correlation coefficient.

To create scatter plot we represent independent variable cost(x) on x axis and dependent variable…

Answered: The following data set shows the weekly…

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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Below is a hypothesis test set up by a student who recently took introductory statistics: Họ: x = 5 HA X= 5 The sample mean of 100 cases used to implement the hypothesis test is x = 4,2. Which of the following statements are accurate? i. This is a one-sided hypothesis test. ii. There is an error in how these hypotheses were constructed. iii. It would be reasonable to swap "<" for "" in the alternative hypothesis. Oi only O ii only O i only Oi and ii Oi and ii O i and iii Submit Question * Previous DEC 11 tv
Suppose you conduct a hypothesis test based on a sample where the sample size is n = 50, and arrive at a p-value of 0.08. You then refer back to your notes and discover that you made a careless mistake, the sample size should have been n = 500. Will your p-value increase, decrease, or stay the same? stay the same increase decrease Answer not here
The label on a 4-quart container of orange juice states that the orange juice contains an average of 1 gram of fat or less. Answer the following questions for a hypothesis test that could be used to test the claim on the label. (a) Develop the appropriate null and alternative hypotheses. H0: ? > 1 Ha: ? ≤ 1 H0: ? < 1 Ha: ? ≥ 1 H0: ? ≤ 1 Ha: ? > 1 H0: ? = 1 Ha: ? ≠ 1 H0: ? ≥ 1 Ha: ? < 1 (b) What is the type I error in this situation? What are the consequences of making this error? It is claiming ? < 1 when it is not. This error would claim that the product is not meeting its label specification when it really is meeting its specification. It is claiming ? ≥ 1 when it is not. This error would miss the fact that the product is not meeting its label specification. It is claiming ? ≤ 1 when it is not. This error would miss the fact that the product is not meeting its label specification. It is claiming ? > 1 when it is not. This error would claim that the…
Consider the following hypothesis test. H0: ? = 100 Ha: ? ≠ 100 A sample of 65 is used. Identify the p-value and state your conclusion for each of the following sample results. Use ? = 0.05. (a) x = 104 and s = 11.5 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) State your conclusion. Reject H0. There is sufficient evidence to conclude that ? ≠ 100.Do not reject H0. There is insufficient evidence to conclude that ? ≠ 100. Do not reject H0. There is sufficient evidence to conclude that ? ≠ 100.Reject H0. There is insufficient evidence to conclude that ? ≠ 100. (b) x = 96.5 and s = 11.0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Reject H0. There is sufficient evidence to conclude that ? ≠ 100.Do not reject H0. There is insufficient…
If a hypothesis test rejects the null hypothesis test at a = 0.05 will it also always reject the null at a = 0.01?
A sociologist wants to study what proportion of people have significant relationship problems due to financial stress. A previous study she is aware of estimated it to be 32% but she believes this has increased in modern times. She collects a random sample of 150 people and 63 of them report relationship problems due to financial stress. Conduct an appropriate hypothesis test in questions #22-#25. Compute the Z-score for this hypothesis test and round to two decimal places. z = 1.58 z = 2.06 z = 2.63 z = 0.84
Let’s take another look at the dinosaur example from the first part of the exam. Go ahead and figure out if smoking causes deaths in dinosaurs. Do not forget to follow all the steps of a hypothesis test; use =0.05, write out the conclusion. Smoking Die yes no TOTAL yes 1845 97 1942 no 496 1359 1855 TOTAL 2341 1456 3797
Which of the following is not a correct way to state a null hypothesis? A Ho:P1- P2= o B Ho: H1 - H2 =0 C Ho: H=0 D Ho: p=0.5
Find the P-value for the indicated hypothesis test. Round all proportions and standard scores to two decimal places.In a sample of 47 adults selected randomly from one town, it is found that 10 of them have been exposed to a particular strain of the flu. Find the P-value for a test of the claim that the proportion of all adults in the town that have been exposed to this strain of the flu is 8%.
Charlie will perform a hypothesis test at the a = 0.05 level. Felice will perform the same test at the a = 0.01 level.
Consider the following hypothesis test. H0: ? ≥ 55 Ha: ? < 55 A sample of 36 is used. Identify the p-value and state your conclusion for each of the following sample results. Use ? = 0.01. NEED P-VALUE FOR THE FOLLOWING (a) x = 53 and s = 4.7 the test statistic. (Round your answer to three decimal places.) -2.553 Find the p-value. (Round your answer to four decimal places.)p-value = (b) x = 56 and s = 6.0 the test statistic is 1 Find the p-value. (Round your answer to four decimal places.)p-value =
A formula that provides the evidence against a null hypothesis is called: A. Test-statistic B. Population statistic C. Both a and b D. Neither a or b

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