Let n₁ = 50, X₁ = 40, n₂ = 50, and X₂ = 20. Complete parts (a) and (b) below. Determine a conclusion. Choose the correct answer below.the null hypothesis. There isdifference between the two population proportions.evidence to support the claim that there is a significantb. Construct a 95% confidence interval estimate of the difference between the two population proportions.П5П1-П25(Type integers or decimals. Round to four decimal places as needed.)

That is, there is no evidence to conclude that there is significant difference between the two…

Answered: Determine a conclusion. Choose the…

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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If n = 101, =47, and s = 16, construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. Technology Question Help: Written Example Submit Question - Type here to search F6 F9 F10 F1 F2 F3 F4 %23 & 4 7 8. W R T A S H. J K X C V B N M L DI
Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 209 with 72 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. = How do you solve this
Out of 200 people sampled, 36 had kids. Based on this, construct a 99% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places _______<p<_______
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Which of the following are assumptions for testing a single population proportion? (Select all that apply.) O The variable of interest is numerical. O The variable of interest is categorical. The sample size is at least 15. The sample size is at least 30. The number of success and failures based off the sample proportion are at least 15. The number of success and failures based off the sample proportion are at least 30. The number of success and failures based off the claimed proportion are at least 15. O The number of success and failures based off the claimed proportion are at least 30. O The population is normal. Random sample. O Independent observations within the sample.
Records show that students score an average of 850 points on an achievement test. A test prep company believe their students will have different scores. To test this hypothesis, they sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test at a confidence level of 95%. a. State the null and alternative hypothesis mathematicallyb. What is the significance level? c. If 856 is a significantly significant score after being transformed into a z statistic, where will it lie in the distribution below? In area 1, area 2 or area 3?
In 1992 a national vital statistics report indicated that about 2.3% of all births produced twins. Is the rate of twin births the same among very young mothers? Data from a large city hospital found only 7 sets of twins were born to 455 teenage girls. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed. Are the assumptions and the conditions to perform a one-proportion z-test met? ... No Yes State the null and alternative hypotheses. Choose the correct answer below. A. Ho: p=0.023 HA: P >0.023 B. Ho: p=0.023 HA: P = 0.023 C. Ho: p=0.023 HA: P<0.023 D. The assumptions and conditions are not met, so the test cannot proceed. Determine the z-test statistic. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. Z= (Round to two decimal places as needed.) OB. The assumptions and conditions are not met, so the test cannot proceed.
Assume that population proportion is to be estimated from the sample described. Use the sample results to approximate the margin of error and 95% confidence interval. n=480, p=0.65
We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 486 had kids. Based on this, construct a 99% confidence interval for the proportion, p, of adult residents who are parents in this county.Give your answers as decimals, to three places._____ < p < _____
Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 640 randomly selected adults showed that 99.3% of them would erase all of their personal information online if they could. Make a subjective estimate to decide whether the results are significantly low or significantly high, then state a conclusion about the original claim.
Request Request le Docs b. 0.0042 c. 0.8315 d. 0.5000 the z* multiplier for an 85% The z* multiplier for a 98% confidence interval for p, - p, would be confidence interval for p1- p2- Select one: a. larger than b. smaller than C. the same as d. none of the above. An agricultural researcher wishes to see if a kelp extract prevents frost damage on tomato plants. Two similar small p are going to be planted with the same variety of tomato. Both plots will be treated identically with the exception that t plants on plot1 are going to be sprayed weekly with a kelp extract while the plants in plot 2 are not. Let p1 and p2 be the actual proportion of all tomatoes of this variety that would experience crop damage undor th and no kelp treatments respectively, when grown under Gondition ader
Determine the sample size n needed to construct a 95% confidence interval to estimate the population proportion when p=0.42 and the margin of error equals 8%. n = ____?___ (Round up to the nearest integer.)

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