In 1942, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on occasion consume, alcoholic beverages?" Of the 1100 adults surveyed, 440 indicatedthat they were total abstainers. In a recent survey, the same question was asked of 1100 adults and 418 indicated that they were total abstainers. Complete parts (a) and (b) below.Determine the null and alternative hypotheses.Ho: P₁P2H₁: P₁P₂Find the test statistic for this hypothesis test.(Round to two decimal places as needed.)

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Answered: In 1942, an organization surveyed 1100…

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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2
Refer to the following scenario. A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these social outreach programs should be located based on the percentage of residents living below the poverty line in each region of the city. He takes a simple random sample of 122 people living in Gastown and finds that 24 have an annual income that is below the poverty line. For each of the following statements, specify whether the statement is a correct interpretation of the 95% confidence interval for the true proportion of Gastown residents living below the poverty line. Help with the true and false i got it wrong
A researcher wants to test whether there is a difference in test scores between two groups. Which hypothesis should be the null hypothesis? a. There is a difference in test scores between the two groups. Ob. There is no difference in test scores between the two groups. Oc. The test scores of the two groups are positively related. Od. The test scores of the two groups are negatively related.
One year a survey asked a group of people from a certain country the following question, "How many cigarettes do you smoke a day?" Of the 830 people who responded, 7% reported having only 1 cigarette. Identify (a) the sample, (b) the population, and (c) the statistic reported. (a) What is the sample for this survey? O A. The sample is the 830 people who responded. B. The sample is the people in the particular country who did not respond. OC. The sample is the 7% who reported smoking only one cigarette. O D. The sample is the public in the particular country. (b) What is the population for this survey? O A. The population is the public in the particular country. O B. The population is the 7% who reported smoking only 1 cigarette. O C. The population is all of the people in the world. O D. The population is the 830 people who responded. (c) What is the statistic reported for this survey? statistic reported is percentage of respondents who reported smoking only 1 cigarette (7%). O B. The…
Some people claim that they can tell the difference between a diet soda and a regular soda in the first sip. A researcher wanting to test this claim randomly sampled 84 such people. She filled 84 plain white cups with soda, half diet and half regular through random assignment, and asked each person to take one sip from their cup and identify the soda as diet or regular. 51 participants correctly identified the soda. Conduct and interpret a hypothesis test for the following question: are these people any better or worse at telling the difference between diet and regular soda than random guessing (correctly identify soda half of the time)? HINT: what is your hypothesized proportion if you want to test if these participants are right or not half of the time? Use a = .01 significance level. Solve Critical value:
O 500 men and 519 women are polled as to whether appearance in a member of the opposite sex is important to them, with 412 of the men and 298 of the women replying in the affirmative. To a 1% level of significance, can it be asserted that, in general, a greater percentage of men than women find appearance in a member of the opposite sex important?
Question 1. If u can help with others that would be great too.
.A tourist wants to make a trip to a small city and visit the crowded shopping center. The city's mayor claims less that 10% of its residents are non- vaccinated against a very serious infectious disease. He is deciding whether to make a trip to the city's shopping center, so performs a hypothesis test to determine whether the city's mayor claim is true. 1. Let represent the proportion of the residents who are non-vaccinated, write the null and alternative hypothesis. 2. When will type 1 error occur in this situation? 3. When will type Il error occur in this situation? 4. Which error is more serious and risky in this situation? EXPLAIN
A music minister believes that he sings at more than four conferences per year. What is the null hypothesis for his statement? A. HO : µ ? 4 B. HO : µ ?4 C. HO : µ = 4 D. HO : µ ≠4
Suppose that a difference between two groups mean is examined. In the language of statistics, the null hypothesis (Ho) is a statement that is there is: O A. None of these O B. no difference between the sample means. O C.a difference between the population means. O D. no difference between the population means. O E. a difference between the sample means.
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1

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