A law enforcement agent believes that 80% of the drivers stopped on Saturday nights for speeding are under the influence of alcohol.  Suspecting that the proportion under the influence may be higher than 80%, a SRS of 140 drivers who were stopped for speeding on a Saturday night was taken.  119 of the drivers in the sample were under the influence of alcohol.   What is the p-value of the test?

Q: A random sample of 105 students of University A showed that 12 were in favour of a new grading…

A: Given: Sample size (n1)=105Sample size (n2)=108x1=12x2=18α=0.01

Q: A local steel pipe manufacturing company makes pipes. In a quality control assessment, a total of…

A: Given: The number of samples is k=5. The number of observations in each sample is n=4. The provided…

Q: a) What is the level of significance? State the null and alternate hypotheses. H0: ? = 13.5; H1: ?…

A: Let μ be the population mean average mileage driven. Given that, Population mean (μ) = 13.5…

Q: proportion of only children in the special program is significantly different from the proportion to…

A: Given : Claim : The proportion of only children in the special program is significantly different…

Q: A hospital found out that there is a higher incidence of food poisoning in adults than in children.…

A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…

Q: Suppose the p-value for a two-tailed test equals 0.0463 and the level of significance equals 2.5%.…

A: If p-value > significance level, then the we fail to reject null Hypothesis If p-value <…

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: Given: p0=0.98α=0.01n=500x=480

Q: An electrical firm claimed that at least 85% of the parts they supplied conforms to specification. A…

A: Given : Claim : At least 85% of the parts they supplied conforms to specification.

Q: What is the p-value of a one-sided greater than One-Sample Z-Test for Mean where the z-statistic…

A: Denote p as the true population proportion.

Q: The Nero Match Company sells matchboxes that are supposed to have an average of 40 matches per box,…

A: This is the single mean test. Here, the level of significance is 0.01. a) The null and alternative…

Q: What is the p-value of a one-sided less than One-Sample Z-Test for Mean where the z-statistic equals…

A: We have to find correct option.

Q: In 2005, Health Canada claimed that 16.6% of Canadian adults are obese. A researcher wanted to check…

A: It is a two tailed test.

Q: The denominator of the F-ratio in the repeated-measures ANOVA is represented by which of the…

A: We know that the, in repeated-measures ANOVA,  F-ratio is defined as the ratio of the mean sum of…

Q: The percentile 87 (Pg7) such that Pg7=78, means that: Select one: a. 13% of values are greater than…

A: A discrete variable is a variable whose value can be obtained by counting. A discrete variable is a…

Q: Physicians at a clinic gave what they thought were drugs to 900900 patients. Although the doctors…

A: Let p be the population proportion of patients reported an improved condition. The hypothesis that…

Q: Twenty years​ ago, 47​% of parents of children in high school felt it was a serious problem that…

A:

Q: A city government did a survey of working women, to see how they felt about juggling jobs and family…

A: Total number of respondents is 2800.Out of which 1678 respondents checked the item "stress is a…

Q: b.Twenty means were piotted on a control chart. An analyst counted 13 runs above/below the median,…

A:

Q: A local steel pipe manufacturing company makes pipes. In a quality control assessment, a total of…

A: The value of D3 corresponding to sample size 4 is 0, and value of D4 corresponding to sample size 4…

Q: Select the most appropriate response. Five years ago, a survey found that the proportion of city…

A: Solution:  The null and alternative hypotheses are:

Q: Test the claim that the proportion of people who own cats is larger than 80% at the 0.025…

A:

Q: Twenty years ago, 55% of parents of children in high school felt it was a serious problem that high…

A: Given n=700 P0=0.55

Q: Use these results from a USA Today survey in which 510 people choseto respond to this question that…

A:

Q: Amoung 198 smokers who underwent  a "sustained care" program, 51 were no longer smoking after six…

A: Given: Total number of smokers = 198 (n). Number of smokers who quit smoking after sustained care =…

Q: Based on information from the Federal Highway Administration web site, the average annual miles…

A: Consider that μ is the national average of the mileage.

Q: Nationwide 13.6 percents if employed wage and salary workers are union members. At random sample of…

A: Solution: Let X be the number of union members and n be the sample number of local wage and salary…

Q: Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or…

A: x = 46 n = 101

Q: A music expert from a CD player company believes that 40% of music lovers prefer romantic music.…

A:

Q: For the ANOVA result, F(4, 153) = 1.102, p = 0.358 how do I answer the folowing?1. How many groups…

A: Given that, F (4, 153) = 1.102, p = 0.358 F (k-1, N-k)

Q: α is the observed level of significance whereas the p-value is the preset level of significance.…

A: We have given that, α is the observed level of significance whereas the P- value is the preset level…

Q: The research scenario states: decide to look at whether there is a difference between the average…

A: Given the research scenario: decide to look at whether there is a difference between the average…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 32%. Given the…

A: Given P=32%=0.32 Sample size (n)=1820 X=532 Significance level=0.05

Q: The US Department of Energy reported that 51% of homes were heated by natural gas. A random sämple…

A:

Q: Based on information from the Federal Highway Administration web site, the average annual miles…

A: Determine the statement of the hypothesis. Here, testing whether average miles driven per vehicle in…

Q: Three runs of an assay generate 72.49%, 72.99% and 72.40%. The average result needs to be accurate…

A:

Q: What is the conclusion? A recent survey done by the Philippine Housing Authority found that 35% of…

A: The hypotheses are given below: Null hypothesis: H0:p=0.35 Alternative hypothesis: H1:p≠0.35 Since…

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…

A:

Q: tor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or more…

A: The null and alternative hypotheses are: Ho: p ≥ 0.50Ho:p≥0.50 Ha: p < 0.50Ha:p<0.50 This…

Q: In a certain school district, it was observed that 30% of the students in the element schools were…

A: Determine the hypothesized population proportion for this test. From the information, given that…

Q: proportion of homes in Oregon that were heated by natural gas is different than what the DOE…

A: Given data number of success , x= 132 sample size, n =331 population proportion,p= 0.48…