A tech company purchases memory cards from a supplier. The failure rate of these cards (measured in theproportion of cards that stop functioning within the first year of use) is p-0.026.A new supplier suggest that their cards have a lower failure rate. To test their claim, the company purchases500 memory cards, and finds that ten fail within the first year.Use this data to perform the appropriate hypothesis test at a-0.01. Clearly show all five steps as in elass, aswell as all relevant calculations and assumptions (if any). Finally, state the P-value of this test.

Given: p 0.026 x 10 n 500 α 0.01

Answered: A tech company purchases memory cards…

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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Similar questions

A ski lift manager is interested in the average daily number of ski lift users. In previous years, fewer than 945 people, on average, have used the ski lift daily over the winter season. The manager suspects this average has increased in recent years. If the ski lift manager chooses to use the p-value approach for his hypothesis test, what does he need to compare the p-value to?
A high school is proud of its advanced chemistry class, in which its 16 students scored an average of 89.3 on the statewide exam, with s = 9. Test the same hypothesis at the .01 level (two-tailed), considering your decision with respect to the null hypothesis, what type of error (Type I or Type II) could you be making?
In a recent survey, it was stated that Americans watch television on average four hours per day. Assume that σ = 2. Using 40 students as the sample, conduct a hypothesis test to determine if the average for students at your school is lower:
A newsletter publisher believes that 25%of their readers own a personal computer. Is there sufficient evidence at the 0.01 level to substantiate the publishers claim? State the null and alternative hypothesis for the above scenario.
In a survey taken in 2020, 20 out of 50 women and 17 out of 45 men said that they felt our country was headed in the wrong direction regarding universal health care. Do these data provide sufficient evidence at the 0.01 level of significance to conclude that the proportions of women and men that feel out country is headed in the wrong direction regarding healthcare are equal? Use the P-Value Method of Testing. In your work space below, you will need to have -1. The null hypothesis, Ho 2. The alternative hypothesis, H1 3. The test statistic 4. The type of test(left, right, two-tailed) and the p-value 5. The decision to accept Ho or reject Ho
According to the National Highway and Traffic Safety Administration, the proportion of fatal traffic accidents in the United States in which the driver had a positive blood alcohol concentration (BAC) is .36. Suppose a random sample of 105 traffic fatalities in the state of Hawaii results in 51 that involved a positive BAC. D) Check whether the conditions for hypothesis testing using the P-value approach are meet.
A Harris Poll statistician stated that 35% of people drink coffee to combat midday drowsiness. A recent survey was taken, and found that 19 out of 48 randomly selected people drank coffee to combat midday drowsiness. At a = 0.02, conduct all steps of a hypothesis test to test the claim of the Harris Poll statistician.
An experiment is conducted to test the claim that James Bond can taste the difference between a Martini that is shaken and one that is stirred. What is the null hypothesis?
In a survey of 240 students in an elementary statistics class at the University of California-Davis (UCD), 30 said that they were left-handed and 210 said that they were right-handed. Assume that the students are representative of all students at the school. Does this provide evidence that the proportion of UCD students who are left-handed differs from the national proportion of 0.10? Carry out the five steps of the hypothesis test for this situation. (Use ? = 0.05.) Set up the null and alternative hypothesis. (Enter != for ≠ as needed.) H0: Ha: Compute the test statistics for this situation. (Round your answer to two decimal places.) z = Calculate the p-value for the test. (Round your answer to four decimal places.) p-value = On the basis of the p-value, make a conclusion for this situation. Reject the null hypothesis because the p-value is greater than 0.05. Do not reject the null hypothesis because the p-value is smaller than 0.05. Reject the null hypothesis…
In a survey of 240 students in an elementary statistics class at the University of California-Davis (UCD), 31 said that they were left-handed and 209 said that they were right-handed. Assume that the students are representative of all students at the school. Does this provide evidence that the proportion of UCD students who are left-handed differs from the national proportion of 0.10? Carry out the five steps of the hypothesis test for this situation. (Use ? = 0.05.) Set up the null and alternative hypothesis. (Enter != for ≠ as needed.) H0: Ha: Compute the test statistics for this situation. (Round your answer to two decimal places.) z = Calculate the p-value for the test. (Round your answer to four decimal places.)
Employees of a building materials chain facing a shutdown were surveyed on a prospective employee ownership plan. Some employees pledged $10,000 to this plan, putting up $800 immediately, while others indicated that they did not intend to pledge. Of a random sample of 175 people who had pledged, 78 had already been laid off, whereas 208 of a random sample of 604 people who had not pledged had already been laid off. Test, at the 5% level against a two-sided alternative, the null hypothesis that the population proportions already laid off were the same for people who pledged as for those who did not.
The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 50 records of automobile driver fatalities in a certain county showed that 33 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.10. State the null hypothesis H0 and the alternate hypothesis H. np? nq? What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ?? Interpret your conclusion in the context of the application.

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