Many Americans were happy with the Supreme Court's decision to accept same-sex marriage. A poll was conducted showing that among the 415 randomly selected Republicans, 178 were satisfied with gay and lesbian acceptance in the U.S and among 599 randomly selected Democrats, 359 were satisfied with gay and lesbian acceptance. Are Republicans less satisfied with gay and lesbian acceptance in the U.S. compared to Democrats? What is the critical value(s) for this test? -1.645 -2.575 -1.833 -2.33 -1.96

Q: The table below gives the age and bone density for five randomly selected women. Using this data,…

A: Age (X) Bone Density(Y) 34 357 45 341 48 331 60 329 65 325

Q: High levels of cholesterol in the blood are associated with higher risk of heart attacks. Will using…

A: n1=2051 and x1=56Similarlyn2=2.30 and x2=84 where  n1=men took the drug gemfibrozilx1=men in the…

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A: probability of seed growing into a healthy plant(p)=0.57 sample size(n)=9 Let "x" be the no. of…

Q: Suppose the lengths of human pregnancies are normally distributed with μ = 266 days and o 16 days.…

A: Answer:- Given, The lengths of human pregnancies are normally distributed with μ = 266 days and σ =…

Q: ccording to the U.S. Bureau of Labor Statistics, approximately equal numbers of men and women are…

A: It is given that: For the Industrial sector: The no. of sample size, n1=110. The no. of sampled…

Q: Find an equation of the least-squares regression line. Round your answer to three decimal places, if…

A: Here dependent variable (y) = Length Independent variable (x) = Birth weight Sample size (n) = 10

Q: An education researcher claims that 57% of college students work year-round. In a random sample of…

A: The question is about hypo. testing Given : Popl. prop. of college stud. work year round ( p ) =…

Q: A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4584…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: It was reported that nationally the price of gas in 2021 w the average price in Georgia. He charged…

A: Number of sample =100Mean x¯=3.96σ=0.60Significance level =0.05

Q: Participants who agree to use a certain weight loss pill to help alleviate their hunger were…

A: Provided sample observations: Before After 9 8 9 9 7 6 6 5 8 8 7 7 7 8 5 4 8 6…

Q: Suppose the scores of students on an exam are normally dis- tributed with a mean of 588 and a…

A: Mean = u = 588 Standard deviation = o = 38 Percentage of students scored between 512 and 664 on the…

Q: Hours per week spent using the Internet or www Independent Samples Test Equal variances assumed…

A: Considering μ1 and μ2 as the average habit of using the internet by men and women, it is set up:…

Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…

A: The hypothesized mean μ=69 The sample size n=144 The sample mean  x¯=69.5 The sample standard…

Q: State the null and alternative hypotheses for the above scenario.

A: Population proportion of the test tubes contains error P = 68% =0.68  Sample of size n= 100 with…

Q: SUMMARY Groups Group 1 Group 2 Group 3 ANOVA Source of Variation Count 15 15 15 SS Sum 727 750 761…

A: Given, sample size (n1) =15 sample size (n2) =15 sample size (n3) =15

Q: Q8. Are rent rates influenced by the student population in a college town? Let rent be the average…

A: Consider the given regression equation: logrent^=0.03048+0.5logpop+0.673logavginc+0.0046pctstu…

Q: The circle graph shows the number of times a group of survey respondents watched the news in the…

A: The circle graph shows the number of times a group of survey respondents watched the news in the…

Q: The table shows in the yield (in bushels per acre) and the total population production (in millions…

A: Year x Yield  1950 50 34 1960 60 53 1970 70 83 1980 80 100 1990 90 122 2000 100 139…

Q: To get the best deal on an appliance, Jeremy called six appliance stores and asked the cost of a…

A: From the question $119, $488,   $227,  $644,   $344,   $266

Q: Consider the following hypotheses that relate to the medical field: Ho: A person is free of disease…

A: We have given the following hypothesis The null and alternative hypothesis are H0 : A person is free…

Q: A hypothesis test shows that a sample of air fresheners made with a new formula last significantly…

A: It is needed to explain conclusion of the hypothesis test.

Q: You develop a new vaccine for HPV and want to know if the effectiveness is different in men and…

A: You give the vaccine to 45 men and 63 women. After several years you find that 12 men came down with…

Q: A student earned grades of A, B, B, C, and D. Those courses had these corresponding numbers of…

A: Solution: Let's calculate the quality points for each grade: A = 4 B = 3 B = 3 C = 2 D = 1

Q: An ecologist records the hourly number of birds x, (i = 1,2,3,...,40) flying over a wetland. The…

A: Sample size n=40 Sum of observations ∑i=140xi=1200 The sum of the square of observations…

Q: Discuss each of these assumptions and conditions for this problem.

A: Let p1 and p2 be the population proportions proportion of 15-24-year-olds in London who were…

Q: The height of plants is normally distributed with a mean of 42 inches and a standard deviation of 8…

A: Note :Since you have posted multiple questions, we will provide the solution only to the first…

Q: At California community colleges, 28% of students share a room with another person. In a group of 7…

A: Answer: From the given data, Let X: Number of students share a room with another person Sample size…

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A: In the realm of statistics and data analysis, understanding measurement scales is crucial for…

Q: This is the number of successes and sample size for a simple random sample from a population x=6,…

A: X=6 n=40 Alpha =0.02

Q: Health officials routinely check sanitary conditions of restaurants. Assume you visit a popular…

A: P=3/7=0.426 n=10

Q: There are 50 states in a certain country. The histogram shows murder rates per 100,000 residents and…

A: Number of states in the country is 50. The given histogram indicates murder rates per 100,000…

Q: Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons…

A: Sample size n=15 The sample data are as follows: Car 1   Car 2   235 275 212 321 266 237 155…

Q: A random sample is selected from an approximately normal popu- lation with an unknown standard…

A: The given alternative hypothesis is HA:μ<3. This is left-tailed test as the direction of…

Q: what are the requirements for using a t-distribution to calculate a 95% confidence interval?

A: Solution-: We want to find what are the requirements for using a t-distribution to calculate a 95%…

Q: Gardening: A gardener buys a package of seeds. Eighty percent of seeds of this type germinate. The…

A: p=0.80 sample size(n)=90 Let "x" be the no. of seeds germinate x~Binomial(n=90,p=0.80)…

Q: Jana has 10 blouses, 5 pairs of shoes, 5 skirts,and 5 hats. How many distinct 'outfits' does she…

A: No.of blouses=10 no.of pairs of shoes=5 no.of skirts=5 no.of hats=5

Q: A student is taking a multiple-choice quiz in which each question has five choices. Assume that the…

A: Probability of guessing (p) = 1/5 = 0.20  Number of question(n) = 10

Q: 1. Find the test statistic    2. Identify the P-Value

A: Mean(x)=25.6 standard deviation(s)=3.6 sample size(n)=200 The null and alternative hypothesis is…

Q: The table below gives the age and bone density for five randomly selected women. Using this data,…

A: Answer  Age    Bone Density34    35745    34148    33160    32965    325

Q: A manufacturer of halogen bulbs knows that 3% of the production of their 100 W bulbs will be…

A: p=0.03 sample size(n)=144

Q: 2. An investment consultation firm claims that it will increase the returns on its clients'…

A: Given that  Sample size n =50 Sample mean =18.5 Standard deviation =0.5

Q: According to a study conducted by a statistical organization, the proportion of people who are…

A: From the given information,      P = 0.88       n = 100 We know that, Quantitative variables can be…

Q: A survey asked 827 randomly sampled registered voters in California to select a response best…

A: The data for responses of the graduated college and didn't graduate college respondents is given.

Q: A health professional obtains records for 35 patients who have undergone a certain surgical…

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Q: A manufacturing firm produces car batteries with an average life span of 4 or more years. An…

A: From the provided information, Sample size (n) = 29 Sample mean(x̄) = 1.9 Sample…

Q: How much more time do statistics students spend studying for their final exam than they spend…

A: Final Midterm 150 86 306 128 236 165 220 165 319 76 162 119 159 57 184 182 153 126…

Q: Step 4: Make a Conclusion About the null hypothesis. Since the p-value= 0.045213897692036 the null…

A: Given that p-value = 0.0452

Q: (a) Determine and interpret the quartiles. By the quartiles, about % of the wait times are Q₁ =…

A: The accompanying data represent the wait time (in minutes) for a random sample of forty visitors to…

Q: What is the significance of the sig level, alpha level and t test when doing statitics?

A: What is the significance of the sig level, alpha level and t test when doing statitics?

Q: Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone…

A: Sample mean x¯=8.1 variance s=0.25 Sample size (n) = 24