A law enforcement agent believes that more than 88% of the drivers stopped on Saturday nights for speeding are under the influence of alcohol. A sample of 60 drivers who were stopped for speeding on a Saturday night were taken and 54 of the drivers in the sample were under the influence of alcohol. State the null and alternative hypotheses. Determine the critical value and rejection region (rounded off to three decimals). Calculate the test statistic (rounded off to two decimals) and interpret your findings

Q: A television executive claims that the percent of households that watch the Macy's parade on…

A: The null and alternative hypothesis is given by,H0:P=0.65Ha:P<0.65 Given: n=171, x=households…

Q: Identify the null and alternative hypotheses for this test. Choose the correct answer below.

A: Here Given  Sample size=n=212 X=54 Claim-More than 20 % of user develop nausea.

Q: a ghed to one of the four programs and their output for a day's work has been recorded. You are…

A: Given that : A table is given by using one way anova concept we complete this table and using…

Q: A data set includes data from 500 random tornadoes. The display from technology available below…

A:

Q: (a) What are the null hypothesis H, and the alternative hypothesis H, that should be used for the…

A:

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: A) The hypothesized mean is 8.16.

Q: Suzette, a dental assistant, would like to test the claim that the number of cavities of incoming…

A: Given data is appropriate for testing of hypothesis to test z-test for single mean . Because it is a…

Q: re are from medicines manufactured in the United States. Assume that a simple random sample has been…

A: Population mean μ =14 Sample size n =10

Q: c) Use the classical approach at the a=0.10 level of significance to find the critical value and…

A: From given data we have ; n=250 x=23.2 s=3.1

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

A: Given that :  A recent survey showed that a sample of 500 packages delivered by a postal service,…

Q: Do cars get better gas mileage on the highway? The table shows the mileage per gallon of cars on…

A: Given that, Sample size n=8 The difference between two paired samples is calculated using formula…

Q: Thirty GPAs from a randomly selected sample of statistics students at a college are linked below.…

A: The technician in charge of records claimed that the population mean GPA for the whole college is…

Q: a. What are the correct hypotheses? (Select the correct symbols and use decimal values not…

A: It is given that  Population proportion, p = 52% = 0.52 Favourable cases, X = 142 Sample size, n =…

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…

A:

Q: Using a test statistic and critical value. What is the correct decision for this test

A: Given that Sample size n = 250 Number of adults who never have been married, X = 97 Level of…

Q: approximately 50 million empty aluminum beer and soda cans.​ Recently, a fire occurred at the…

A: Given : The true proportion of cans in the warehouse that were contaminated by the fire is p .…

Q: Refer to Exhibit 1. The mean square between treatments is O 16350 8750 O 475 O 2916.67

A:

Q: publisher reports that 67% of their readers own a particular make of car. A marketing executive…

A: Solution

Q: the food marketing insititute reports that 28% of households spend less than $100 per week on…

A: the probability that less than 102 households spend less than $100 per week on groceries is…

Q: A school district is considering moving the start of the school day at Groveland High from 8:00 a.m.…

A: The correct option is "option A"  Explanation: The two samples are independent Samples are taken…

Q: A new study shows that 35% of adults have never been married. To test if that is a true claim, we…

A: Given: n= 250.0 ,x= 97.0 p= 0.35 ,significance level(∝)= 0.05p̂= 97.0 / 250.0 =0.388

Q: Test Statistic Round to thousandths place.

A:

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: Given that: Population mean, μ=8.14 Mean and standard deviation of the sample are: x¯=7.87s=1.25

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A:

Q: The College of Graduate Studies at MNSU claims that more than 60% of undergraduate students at this…

A:

Q: average, college freshmen spend 7.5 hours a week  going to parties. One administrator does not…

A: Given that  Sample size n =100 Sample mean =6.6 Standard deviation =9

Q: Test the claim that the proportion of men who own cats is smaller than 60% at the .05 significance…

A: Checking the conditions for normal approximation: Normal approximation can be used when np>5 and…

Q: A gigantic warehouse stores approximately 70 million empty aluminum beer and soda cans. Recently, a…

A:

Q: Do cars get better gas mileage on the highway? The table shows the mileage per gallon of cars on…

A: Given, the mileage per gallon of cars on city streets and the mileage per gallon of cars on the…

Q: A marketing survey involves product recognition in New York and California. Of 30 New Yorkers…

A: p1 = 30/204 = 0.1471 p2 = 94/297 = 0.3165   Level of significance = 0.06

Q: A premed student wants to test the claim that the mean body temperature is less than 98.6 as is…

A: The sample mean and standard deviation are,

Q: The bad debt ratio for a financial institution is defined to be the dollar value of loans defaulted…

A: The data of mean bad debt ratio of 65 banks are given and objective is to test whether the mean bad…

Q: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of…

A: Solution Given That, A union of restaurant and foodservice workers would like to estimate the mean…

Q: Suppose 224 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A: The objective of this question is to test a claim about a population proportion using a sample…

Q: The federal agency for which you work has a contract with an electrical supply company to provide a…

A: Given,   The sample proportion is,

Q: Write appropriate hypotheses, find the p-value and explain your results.

A: For freshmen, sample size n1 = 200 and number of freshmen who agree with a plan to limit enrollment…

Q: that

A: a. The parameter of interest is the percentage of times the scanners coming up with wrong price tag.…

Q: n a random sample of 400 electrical components, 88 are found to be defective. You wish to test the…

A:

Q: random sample of car crashes is obtained. Among 2792 occupants not wearing seat belts, 33 were…

A: Given data,n1=2792x1=33p1=x1n1=332792 =0.0118n2=7654x2=18p2=187654=0.0024 Determine the test…

Q: home improvement company is interested in improving customer satisfaction rate from the 58%…

A: We have given that  Sample size n=273 favorable cases x=171  Population proportion p=58%=0.58 Sample…

Q: A start-up cell phone applications company is interested in determining whether household incomes…

A: The provided information is as follows:The total sample size is .The total number of service…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.