4. A claim is made that most adults would change their careers if they could. In a 840 randomly selected adults, 437 said that they would change their careers. U significance level to test the claim that most adults would change their career i a. Identify the null and alternate hypotheses. b. Determine the point estimate of the population. Round to two decima

4. A claim is made that most adults would change their careers if they could. In a 840 randomly selected adults, 437 said that they would change their careers. U significance level to test the claim that most adults would change their career i a. Identify the null and alternate hypotheses. b. Determine the point estimate of the population. Round to two decima

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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Claim more than 25% of a class is majoring into Nursing (or Nursing-BSN). Test at the 0.5 significance level. Complete the full hypotheses test answering all the questions here. You can use the traditional or p- value method. Sort out the data. 1. What type of test will need to be used? 2. What is the sample size, n, for major? How many business (including business management) majors, X? Use "=counta" instead of "=count" to count qualitative data 3. Hypothesis test . . • Hypotheses • Ho Ha Critical value* ← Test Value (or p-value) Decision *Skip if your using the p-value method. Summary/conclusion 4. Is there a possible type I or type II error? 5. What can you conclude about business majors from this hypothesis test?
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A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.
11. Suppose Google creates a new workspace in Toronto. The building operates with 1,200 computers. On average. about 50 are out of service. During a trial run for opinions on new computer software, a sample presentation is given to 25 people in a room with 28 computers, determine; a) The mean and standard deviation of a normal approximation of working computers b) The probability that there will be at least 25 working computers in the room.
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7. use the given confidence interval to find the margin of error and the sample proportion. a. (0.719,0.745) b. (0.753,0.777)