Photo-Cop Legislation: Is there sufficient sample evidence to support a claim that the proportion of all adult Minnesotans opposed to photo-cop legislation is greater than 0.5? Use a 0.05 significance level to test the claim that the proportion is greater than 0.5. Sample data consists of n = 829 randomly selected adult Minnesotans with 51% opposed to photo-cop legislation. Hypotheses: ____________________________________________________   P-value: ____________________   Conclusion on null hypothesis:    Conclusion on claim and answer to the question:

Q: In 2011,the New York Yankees won 97 out of 162 of their baseball games. Is there sufficient evidence…

A: 1) Here, p = 0.104 and alpha = 0.05 p>alpha,  If the p-value is greater than alpha, you accept…

Q: A study was conducted to see if there is evidence that a recorded phone call is more effective than…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: A graduate student beleves that people consider faces with more contrast between lip color and skin…

A: The given hypothesis is, Null hypothesis: H0: The level of contrast between lip color and skin tone…

Q: Kevin, a Human Resources professional, would like to make the claim that the average hourly wage for…

A: μ=$9.69 per hour α=0.01

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A: It is given that out of 524 individuals, it is found that 68 prefer candidate A. The sample…

Q: Suppose that according to your company, the average salary for middle managers was 105,000. You…

A: (a)   Determine the type of test must be run.   The type of test that must be run is hypothesis…

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: Claim : the amount of smoking is independent of seat belt use.

Q: the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the CincinnatiEnquirer,…

A: a.

Q: Timothy, a javelin thrower, has a sample throw mean of 72.7 meters from 23 throws. Timothy still…

A: Given hypothesis test to check Timothy mean throw is greater than 65 meters.Ho : µ = 65H : µ >…

Q: An office manager believes that the mean amount of time spent by office workers reading and deleting…

A: Solution:  Manager Claim: The mean amount of time spent by office workers reading and deleting spam…

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the…

A: There are two independent samples which are treatment group and placebo. We have to test whether…

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: Claim : The amount of smoking is independent of seat belt use. Hypothesis : H0 : The amount of…

Q: A recent report claimed that 13% of students typically walk to school. DeAnna thinks that the…

A: The random variable students typically walk to school follows normal distribution. We have to test…

Q: The Statistics Games are played by a large number of students across the county. Last year, 32% of…

A:

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A:

Q: In a hypothetical study, researchers have reported that there was a significant positive…

A: Decision rule: If p-value≤α, then reject the null hypothesis. Otherwise, do not reject the null…

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: State the Null and alternate hypotheses: The two categories of interest are the “Amount of smoking”…

Q: For the same sample data and null hypothesis, how does the P-value for a two-tailed test of ?…

A: p-value  more advanced concept than level of confidence also alpha. But the area distribution of p…

Q: 6. Many children and even adults will not eat the bread crust. But is that the best part to eat in…

A:

Q: A college chemistry instructor thinks the use of embedded tutors will improve the success rate in…

A:

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A:

Q: the unemployment rate for 18- to 34-year-olds was reported to be 10.8% (the CincinnatiEnquirer,…

A: From provided information, the unemployment rate for 18- to 34-year-olds was reported to be 10.8%.…

Q: Is the proportion of teenagers with Back pain the same as those without back pain? A random sample…

A: We have to perform test for proportion.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The proportion is p0=0.52 The total number of samples n=700 The value of…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: For the same sample data and null hypothesis, how does the P-value for a two-tailed test of µ…

A: P-value for two tailed test = 2*P-value for one tailed test

Q: How often do you go out dancing? This question was asked by a professional survey group on behalf of…

A: Let p1: proportion of single men who go out dancing occasionally p2:proportion of single women who…

Q: Test the claim that for the adult population of one town, the mean average annual salary is…

A:

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

A: Given that  Sample size n =900 Population proportion p=47%=0.47

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: Given n=850 P0=0.54 so n*P0(1-P0) = 850*0.54*(1-0.54) =211.1

Q: A random sample of n1 = 299 voters registered in the state of California showed that 146 voted in…

A:

Q: Perform the following hypothesis test of a proportion: HO: p = 0.33 HA: p  0.33 The sample…

A:

Q: Asha owns a car-wash and is trying to decide whether or not to purchase a vending machine so…

A: Power of test depends on 4 factors namely-sample size, standard deviation, effect size and…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: The provided information are:

Q: A curious student taking Math 119 at IVC decides to survey students at the college and compare rates…

A: Given  X1=84, n1=462, X2=95, n2=380 , ɑ=0.05

Q: you can reject H0 at the 1% level of significance, can you always reject H0 for a two-tailed test at…

A: We have given that the decision for one-tailed test.

Q: Passed Failed White Results from a civil servant exam are shown in the table to the right. Is there…

A: Null and alternate Hypothesis

Q: (a) Suppose that you would like to know if there is evidence that the mean time spent checking work…

A: The sample mean is 4.1. The sample size is 1004. The sample standard deviation is 1.4. We have to…

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A: 10.2.21-T

Q: A Mailing Company sells computers and computer parts by mail. The company claims that at least 90%…

A:

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

A: From the provided information, Sample size (n) = 90 Sample mean (x̅) = 43.1 Population standard…

Q: Leaky gas tanks. Nationwide, it is estimated that 40%of service stations have gas tanks that leak to…

A: a.

Q: A researcher surveyed randomly selected Democrats and Republicans asking them what the number one…

A: χ2=∑fo-fe2fe~ (rows-1)×(columns-1) df   where, fo is the observed count                fe is the…

Q: If sample data is such that for a one-tailed test of u you can reject Ho at the 1% level of…

A: The P-value for the two-tailed test is multiple of the one-tailed P-value test indicating that the…

Q: Passed Failed White Results from a civil servant exam are shown in the table to the right. Is there…

A: It needed to test whether results from the civil servant exam are discriminatory.

Q: The director of student services at Oxnard College is interested in whether women are less likely to…

A: Given data : x1= 419.0 n1= 642 x2= 437.0 n2= 626 significance level,…

Q: Chatterbug, a social networking site on the Intermet, would like to determine if gender is related…

A: a)   In this case, it is needed to check whether gender is related to time spent on a Chatterbug…

Q: The director of student services at Oxnard College is interested in whether women are more likely to…

A: There are two independent samples which are women and men. We have to test whether women are more…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.