**Hypothesis Testing for Survey Return Rates**In a study exploring cell phone usage and brain hemispheric dominance, an internet survey was sent to 6,986 individuals randomly chosen from an online group involved with ears. The survey received 1,330 responses. A 0.01 significance level is used to test whether the return rate is less than 20%. The P-value method and a normal distribution approximation for the binomial distribution are utilized.### Identify the Null and Alternative Hypotheses- **Option A:** - $ H_0: p \geq 0.2 $ - $ H_1: p < 0.2 $- **Option B:** - $ H_0: p \leq 0.2 $ - $ H_1: p > 0.2 $- **Option C:** - $ H_0: p = 0.2 $ - $ H_1: p \neq 0.2 $- **Option D:** - $ H_0: p = 0.2 $ - $ H_1: p < 0.2 $- **Option E:** - $ H_0: p \neq 0.2 $ - $ H_1: p = 0.2 $- **Option F:** - $ H_0: p > 0.2 $ - $ H_1: p \leq 0.2 $### Testing Procedure1. **Test Statistic Calculation:** - Enter the calculated test statistic $ z $, rounded to two decimal places.2. **Determine the P-value:** - Provide the P-value rounded to three decimal places.3. **Decision Making:** - Compare the P-value with the significance level to decide if the null hypothesis can be rejected. - Fill in the blanks regarding the significance level, the null hypothesis decision, and the evidence supporting whether the return rate is less than 20%.By completing these steps, you'll conclude whether there is sufficient statistical evidence to claim that the return rate is indeed less than 20%.

Name: **Hypothesis Testing for Survey Return Rates**In a study exploring ce
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: **Hypothesis Testing for Survey Return Rates**In a study exploring cell phone usage and brain hemispheric dominance, an internet survey was sent to 6,986 individuals randomly chosen from an online group involved with ears. The survey received 1,330

Here, the claim of the test is that the return rate is less than 20%. The hypotheses are given…

Math

Statistics

In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6986 subjects randomly selected from an online group involved with ears. There were 1330 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution.

In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6986 subjects randomly selected from an online group involved with ears. There were 1330 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution.

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

Similar questions

A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 282 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 11% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level. What is the final conclusion? A. There is sufficient evidence support the claim that less than 11% of treated subjects experienced headaches. B. There is not sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches. C. There is not sufficient evidence support the claim that less than 11% of treated subjects experienced headaches. D. There is sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches
According to Management Accounting, salary figures for certified management accountants (CMAs) who are in the field less than 1 year are normally distributed with a mean of $31,129. A random sample of 15 firstyear CMAs in Denver produces a mean salary of $32,279, with a standard deviation of $1,797. Test the hypothesis that the mean for all Denver firstyear CMAs is not equal to $31,129. Use the .05 level of significance. 1. State the null hypothesis and alternative hypothesis 2.What is the test statistic used for the test (z or t) and it’s critical value (round to 2 places) 3. Determine the p-value. And do you or do you not reject the null hypothesis?
In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6971 subjects randomly selected from an online group involved with ears. There were 1319 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution.
What’s P value =??
Small-business telephone users were surveyed 6 months after access to carriers other than Carrier A became available for wide-area telephone service. Of a random sample of 240 Carrier A users, 135 said they were attempting to learn more about their options, as did 227 of an independent random sample of 260 users of alternate carriers. Test, at the 1% significance level against a two-sided alternative, the null hypothesis that the two population proportions are the same. Click the link to view a standard normal distribution table. be the Let Px be the proportion of Carrier A users who said they were attempting to learn more about their options and Py proportion of users of alternate carriers who said they were attempting to learn more about their options. Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: Px-Py=0 H₁: Px-Py 20 O D. Ho: Px-P₁ #0 H₁: Px - Py = 0 B. Ho: Px-Py = 0 H₁: Px-Py 0
In a random sample of males, it was found that 21 write with their left hands and 210 do not. In a random sample of females, it was found that 56 write with their left hands and 440 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Identify the test statistic. and p value
You read an online article that claims that 62% of 8-year-olds have social media accounts. You want to investigate that specific claim, so you set up a one-way chi square analysis and recruit 130 8-year-old participants for your sample. What is the expected frequency for the number of 8-year-olds in your sample who have social media accounts? mard Next
To evaluate if auditors might be helped in determining the chances of fraud if they carefully measure cash flow, samples of midlevel auditors from CPA firms were asked to indicate the chance of material fraud on a scale from 0 to 100 for a case. A random sample of 36 auditors used the cash-flow information. Their mean assessment was 35.51, and the sample standard deviation was 24.14. For an independent random sample of 36 auditors not using the cash-flow information, the sample mean and standard deviation were, respectively, 40.58 and 29.18. Assuming that the two population distributions are normal with equal variances, test against a two-sided alternative the null hypothesis that the population means are equal. (Use α = 0.05.) Click the icon to view a table of critical values for the Student's t-distribution. Let μx be the mean assessment for auditors who measured cash flow and μy be the mean assessment for auditors not using the cash-flow information. Determine the null and…
The salary of a recent graduate from a northeast university with an MBA follows a normal distribution with a mean starting salary of $78,000 with a standard deviation of $15,000. You apply the normal model and discover that approximately 7.1% receive a starting salary of more than $100,000. A university administrator surveyed a random sample of 450 of their recent graduates that earned an MBA. How many of these graduates would you expect to receive a starting salary of more than $100,000? Explain.