Hauz of Gaz claims that more than two-thirds of houses in a certain subdivision to use their brand. Is their reason to doubt this claim if 25 out of a random sample of 40 houses in the subdivision use of the company's brand. Test the aim at 0.01 level of significance 9. What are the null and alternative hypothesis 10. What type of test is appropriate for this situation 11. Which of the following are the critical value at z= 005 A. 0.6053 B. 0.6503 C. -0.6053 D. -0.6503 12. What is the value of the test statistic

Hauz of Gaz claims that more than two-thirds of houses in a certain subdivision to use their brand. Is their reason to doubt this claim if 25 out of a random sample of 40 houses in the subdivision use of the company's brand. Test the aim at 0.01 level of significance 9. What are the null and alternative hypothesis 10. What type of test is appropriate for this situation 11. Which of the following are the critical value at z= 005 A. 0.6053 B. 0.6503 C. -0.6053 D. -0.6503 12. What is the value of the test statistic

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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which of these comparison between an ANOVA and t test is correct? A. a t test provides more flexibilty in research studies than an ANOVA B. An ANOVA examines wheater mean differences exists between conditions wheres t test does not C. An ANOVA can be used to compare three or more conditions wheres a t test cannot D. A t test can be used to compare two conditions wheres an ANOVA cannot.
Are freshmen psychology majors less likely to change their major before they graduate compared to freshmen business majors? 454 of the 687 freshmen psychology majors from a recent study changed their major before they graduated and 439 of the 619 freshmen business majors changed their major before they graduated. What can be concluded at the = 0.05 level of significance? The test statistic z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65-74 years: n-118, x- 12.2, and s-6.96, Does this data indicate that average daily zinc intake in the population of all males age 65-74 falls below the recommended allowance? (Use a -0.05.) State the appropriate null and alternative hypotheses, ⒸHR=15 OH₂ = 15 H₂p=15 H₂ <15 ⒸH-15 H₁ s 15 Calculate the test statistic and determine the P-valde (Round your test statistic to two decimal places and your P-value to four decimal
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5. The Instagram handle @getfollowers claims that they can increase the number of followers someone has on Instagram. In March 2015 the mean number of followers for a US teen was 150, so a random sample of 12 US teens with 150 followers was taken. The following is the number of followers, which is normally distributed, these US teens had after they paid @getfollowers for their help. Using a 0.01 level of significance, determine whether @getfollowers is effective at increasing the number of Instagram followers. 160 200 152 150 145 151 162 158 156 149 154 170 Null and Alternative Hypothesis
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Regulations from the Environmental Protection Agency say that soil used in play areas should not have lead levels that exceed a 400 parts per million (ppm). Before beginning construction at a new site, an agent will take a sample of soil and run a significance test on the mean lead level in the soil. If the mean lead level in the sample is significantly higher than 400 ppm, then the soil is deemed unsafe and construction cannot continue. Here are the hypotheses for this test: Ho : µ 400 ppm (soil is unsafe) (where u is the mean lead level in the soil at the new site). Which of the following would be a Type I error in this setting? Choose 1 answer: The soil is actually safe, and the sample result is below 400 ppm. so construction continues. The soil is actually safe, and the sample result is significantly higher than 400 ppm. so construction stops. The soil is actually unsafe, and the sample result is below 400 ppm, so construction continues. The soil is actually unsafe, and the sample…
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