Question

A marketing company claims that it receives 10% responses from its mailing. To test this claim,...

A marketing company claims that it receives 10% responses from its mailing. To test this claim, a random sample of 500 were surveyed with 40 responses. Form a 95% confidence interval to make a decision on the claim. Group of answer choices Do not reject the null (Ho: ? = 0.1) because the 95% CIE is (0.0562, 0.1038) Reject the null (Ho: ? = 0.1) because the 95% CIE is (0.0562, 0.1038) Do not reject the null (Ho: ? = 0.01) because the 95% CIE is (0.0562, 0.1038) Reject the null (Ho: ? = 0.08) because the 95% CIE is (0.0562, 0.1038)

Homework Answers

Answer #1

Ans :

Do not reject the null (Ho: ? = 0.1) because the 95% CIE is (0.0562, 0.1038)

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A marketing company claims that it receives more than 6.5% responses from its Mailing. A sample...
A marketing company claims that it receives more than 6.5% responses from its Mailing. A sample of 600 mails yesterday revealed 54 responses. At the 0.05 level of significance, can we conclude that the claim is true?
A marketing company claims that it receives more than 6.5% responses from its Mailing. A sample...
A marketing company claims that it receives more than 6.5% responses from its Mailing. A sample of 600 mails yesterday revealed 50 responses. At the 0.10 level of significance, can we conclude that the claim is true? *
3. A marketing company claims that it receives more than 6.5% responses from its Mailing. A...
3. A marketing company claims that it receives more than 6.5% responses from its Mailing. A sample of 600 mails yesterday revealed 50 responses. At the 0.10 level of significance, can we conclude that the claim is true? *
A nutrition expert claims that the average American is overweight. To test his claim, a random...
A nutrition expert claims that the average American is overweight. To test his claim, a random sample of 22 Americans was selected, and the difference between each person's actual weight and idea weight was calculated. For this data, we have x¯=18.2x¯=18.2 and s=29.4s=29.4. Is there sufficient evidence to conclude that the expert's claim is true? Carry out a hypothesis test at a 4% significance level. A. The value of the standardized test statistic: Note: For the next part, your answer...
Suppose that a​ researcher, using data on class size ​(CS​) and average test scores from 50...
Suppose that a​ researcher, using data on class size ​(CS​) and average test scores from 50 ​third-grade classes, estimates the OLS regression ModifyingAbove TestScore with caret equals 672.315 ​+ left parenthesis negative 5.1765 right parenthesistimesCS​, Upper R squared ​= 0.09​, SER​ = 9.1 ​(24.675​) ​(2.0806​) Construct a​ 95% confidence interval for beta 1​, the regression slope coefficient. The​ 95% confidence interval for beta 1​, the regression slope​ coefficient, is ​( nothing​, nothing​). ​(Round your responses to two decimal places.​) The...
"Trydint" bubble-gum company claims that 8 out of 10 people prefer their gum to "Eklypse". Test...
"Trydint" bubble-gum company claims that 8 out of 10 people prefer their gum to "Eklypse". Test their claim at the 95 confidence level. The null and alternative hypothesis in symbols would be: H 0 : μ ≤ 0.8 H 1 : μ > 0.8 H 0 : p ≤ 0.8 H 1 : p > 0.8 H 0 : μ = 0.8 H 1 : μ ≠ 0.8 H 0 : p ≥ 0.8 H 1 : p < 0.8...
2. The consumer magazine also claims that the cinnamon rolls at STARBUCKS do not equal 8...
2. The consumer magazine also claims that the cinnamon rolls at STARBUCKS do not equal 8 ounces.    A random sample of 25 customers purchasing cinnamon rolls yields the following results: the sample mean equals 8.15 ounces it is known from previous studies that the population standard deviation equals 0.25 ounces. a. What formula would you use to set up a 95% confidence interval for the true mean? b.   What z-value would you use to set up a 95% confidence interval for...
A company that produces cell phones claims its standard phone battery lasts longer on average than...
A company that produces cell phones claims its standard phone battery lasts longer on average than other batteries in the market. To support this​ claim, the company publishes an ad reporting the results of a recent experiment showing that under normal​ usage, their batteries last at least 35 hours. To investigate this​ claim, a consumer advocacy group asked the company for the raw​ data, which are shown to the right. Find a 95 ​% confidence interval and state your conclusion....
74. When the sample size is changed from 2500 to 900, what is the effect on...
74. When the sample size is changed from 2500 to 900, what is the effect on the std. error? A. The new std error is 9/25 times the old error B. The new std error is 3/5 of the old error C. The new std error is 5/3 of the old error D. The correct answer is not among the choices. E. The new std error is 25/9 of the old error 67. The test statistic for a certain left...
A manufacturer claims that the calling range (in feet) of its 900-MHz cordless telephone is greater...
A manufacturer claims that the calling range (in feet) of its 900-MHz cordless telephone is greater than that of its leading competitor. A sample of 19 phones from the manufacturer had a mean range of 1160 feet with a standard deviation of 32 feet. A sample of 11 similar phones from its competitor had a mean range of 1130 feet with a standard deviation of 23 feet. Do the results support the manufacturer's claim? Let μ1 be the true mean...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT