(b) What proportion of the strength observations are at least 85? Less than 95? (Round your answers to four decimal at least 85 0.9101 less than 95 0.8982 (c) Roughly what proportion of the observations are less than 90? (Round your answer to four decimal places.)

Q: (d) Find the p-value. (Round to three or more decimal places.) (e) Is there enough evidence to…

A: For the given data P value =? Conclusion =?

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A: Given that, From the provided information, The hypotheses can be constructed as: Null hypothesis:…

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Q: A local 4-H club surveyed its members, and the following information was obtained: 18 members had…

A: a.) 36.84% b.) 31.58% c.) 5.26%   explanation is given in below step

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A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

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A:

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: Given that I sample 110 men and 40% own cats. So  40% of 110=0.40×110=44I sample 170 women, and 65%…

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A:

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

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A:

Q: b. If the study had found that 51 of the 80 students were working then: ZSTAT =| (Round your answer…

A: Given sample size, n = 80 students population proportion of working = p = 0.48 51 of the 80 students…

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A: p1= 0.8, n1=170 p2 = 0.4, n2 =50

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A: For the given data perform Z test for one proportion

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A: n = Zα/2E2p^(1-p^)

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A:

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A: Margin of error = 0.035When no information is given about the proportion, we take p = 0.5.…

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A: There are 27 females and 40 males.

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Q: Travel to Outer Space A CBS News/New York Times poll found that 329 out of 763 randomly selected…

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Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: In the hypothesis testing a pooled proportion pc is computed. This pooled proportion is computed by…

Q: Reviewing the sample of offspring of "highly irradiated" male radiologists 92 were female and 53…

A: The total number of offspring in the sample can be calculated as:

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Q: The lengths of pregnancies in a small rural village are normally distributed with: μ = 269 0 = 15 In…

A: Given Mean=269 Standard deviations=15 Z=99.7%

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Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: Given data,E = 45 - 0.04Ƶ -value at 90% confidence is Ƶc = 1.645

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Q: a. What is the percentile rank for X- 9.5? b. What is the percentile rank for X-19.5? c. What is the…

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Q: You are conducting a study to see if the proportion of women over 40 who regularly have mammograms…

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Q: A local 4-H club surveyed its members, and the following information was obtained: 14 members had…

A:

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: Reviewing the sample of offspring of "highly irradiated" male radiologists 98 were female and 46…

A: Given :  Reviewing the sample of offspring of "highly irradiated" male radiologists 98 were female…

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A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: (a) What proportion of college graduates answered yes when asked if they had ever used online…

A: The assumed CI for the difference in proportions is,     (p^1-p^2)±(Z * SE)where Standard Error…

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: Given data, n1=110 p1=0.90   n2=90 p2=0.20 proportion of the pooled samples(p)=?

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A: Solution: The data from World Health Organisations and the United Nations is  Income Level…

Q: Most people believe that smoking is unhealthy. The table given is the result of a study of randomly…

A: Required probability is P(individuals that died from heart disease were smokers)

Q: Table 5.8. Rush hour car occupancy [R158] Table 5.8. Rush hour car occupancy [R1581 Percentage of…

A: We have given data  73.5 18.2 4.7 1.9 1.1 0.5 0.1 Average =sum of observations/total number of…