The research department at the home office of New Hampshire Insurance conducts ongoing research on the causes of automobile accidents, the characteristics of the drivers, and so on. A random sample of 400 policies written on single persons revealed 120 had at least one accident in the previous three-year period. Similarly, a sample of 600 policies written on married persons revealed that 150 had been in at least one accident. At the 0.05 significance level, is there a significant difference in the proportions of single and married persons having an accident during a three-year period? Determine the p-value. Hint. For the calculations, assume the single persons as the first sample. a. State the decision rule. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Ho is rejected if z the interval (

The research department at the home office of New Hampshire Insurance conducts ongoing research on the causes of automobile accidents, the characteristics of the drivers, and so on. A random sample of 400 policies written on single persons revealed 120 had at least one accident in the previous three-year period. Similarly, a sample of 600 policies written on married persons revealed that 150 had been in at least one accident. At the 0.05 significance level, is there a significant difference in the proportions of single and married persons having an accident during a three-year period? Determine the p-value. Hint. For the calculations, assume the single persons as the first sample. a. State the decision rule. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Ho is rejected if z the interval (

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

7. Question: The power of a test is measured by its capability of: a. Accepting a null hypothesis that is true. b. Rejecting a null hypothesis that is true. c. Rejecting the alternative hypothesis that is false. d. Rejecting a null hypothesis that is false. e. None of the mentioned.
Write the null and alternative hypothesis. Are Americans getting fatter? Researchers interested in this question take a random sample of 500 people and record an average weight of 190 pounds. Ten years ago, the average weight was 185 pounds. OA Ho: H= 190 HA: H> 190 О в. Но: и 185 HAiH> 185 OC. Ho: u= 190 HA:u< 190 O D. Ho: u= 185 HA: H< 185 OE. Ho:H= 185 HA u# 185
12
A highly selective quiz show wants their participants to have an average score greater than 90. They want to be able to assert with 95% confidence that this is true in their advertising, and they routinely test to see if the score has dropped below 90.. Select the correct symbols to use in the null hypothesis for this hypothesis test. Ho: ___________, ____________ 90.
Which of the following below could be the null hypothesis ? ( look at the image )
When the null hypothesis is true, the F test statistic is close to ["", "", ""] . When the null hypothesis is false, the F test statistic is most likely ["", ""]
Rejecting the null hypothesis when it is true is called a _____ error
A teacher claims that fewer than 25% of his students are ready for class each day. -State the claim -State the opposite of the claim -State the null hypothesisd.State the alternative hypothesis -State the type of test (left tailed, right tailed, or two tailed) -Use α = 0.05 to find the critical z-value used to test the null hypothesis
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time, µ, spent by customers at the supermarkets has been reported to be 40 minutes, but executives hire a statistical consultant and ask her to determine whether it can be concluded that u is less than 40 minutes. To perform her statistical test, the consultant collects a random sample of shopping times at the supermarkets. She computes the mean of these times to be 34 minutes and the standard deviation of the times to be 10 minutes. Based on this information, answer the questions below.
Part I. Constructing a Null and Alternative Hypothesis: Write a pair of null and alternative statistical hypothesis (can be about any topic).
Rejection of the null hypothesis in the two-sample case imp;ies thatr the a. samples are different on the trait of interest b. populations from which the samples are drawn are different on the trait of interest c. samples are not different on the trait of interest d. populations from which the samples are drawn are not different on the trait of interest
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