The table below gives the number of people that bought either product A, B, or C and their gender. Use the table to complete the 95% confidence intervals. What are the answers to the following four questions? Gender/Product Product A Product B Product C Total Male 20 40 35 95 Female 30 30 50 110 Total 50 70 85 205   Get a 95% confidence interval for the percentage of females that choose product B. How many more females would you need to sample to reduce your margin of error to 3%? Get a 95% confidence interval for the percentage of Product C that are purchased by males.

Q: Match the confidence level with the confidence interval for u. 1. 7+1.645 ( 2. +1.96 () 3. 7 + 2.575…

A: Confidence interval is an interval which is used to state the probability statement about the…

Q: Explain when you would use the paired-samples procedure to make confidence intervals  and test…

A:

Q: 2. The SAT scores of 12 randomly selected high school seniors are given as:   1700  1940  1510  2000…

A: c. The 99% confidence interval can be determined in excel as follows: 99% confidence interval = x ±…

Q: When constructing a confidence interval, if we construct a confidence interval with a 95% confidence…

A: The general formula for the width of the confidence interval is,

Q: a. How many of the 3039 subjects used at least one prescription medication? (Round to the nearest…

A: Given : Total sample size of the survey  = 3039 Out of the sample, proportion of people who have…

Q: Construct the confidence interval for the population mean y. C=0.95, x= 16.7, o= 4.0, and n= 75. A…

A: Here, C=0.95, x=16.7, σ=4.0, and n=75.

Q: Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs…

A: The formula for the confidence interval is , CI=p^± Z*p^1-p^n Where,  p^=the proportion in sample…

Q: 3. You want to find out the percent of people who use an iPhone, so you survey 120 random adults, of…

A: Here we need to construct a 95% confidence interval for the population proportion.

Q: The figure to the right shows the results of a survey in which 1018 adults from Country A 1015…

A: Given Information: Country Sample size (n) Sample proportion (p^) A 1018 0.37 B 1015 0.19 C…

Q: Anna's project for her introductory statistics course was to compare the selling prices of textbooks…

A: Confidence interval:Step-by-step procedure to find the confidence interval using MINITAB…

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1015 adults from Country​ A, 1018…

A: The 99% confidence interval for population proportion is For 99% confidence, zc = 2.58

Q: Out of 156 Nielsen families surveyed about their viewing habits, 43 felt that television was too…

A: We have given that,  Favorable cases (X) = 43 and sample size (N) = 156  Then,  We will find the 99%…

Q: When alpha is set to 0.01 what is the confidence level ? answer choices : 0.01 0.02 0.98 0.99

A: From the provided information, Level of significance (α) = 0.01

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A: Obtain the 90% confidence interval for the population proportion of all female students who would…

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: Using the information from above, with p′=0.488, q′=0.512, and n=400, what is the 90% confidence…

A:

Q: Consider the relationship between the number of bids an item on eBay received and the item's selling…

A: Given Price in Dollars 23 33 37 37 50 Number of Bids 3 4 4 9 9

Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

A:

Q: In order to make the decision for one business, your team constructed a 90% confidence interval, the…

A: For 90% confidence interval, the width of that confidence interval is 500.We have to reduce the…

Q: The figure to the right shows the results of a survey in which 1010 adults from Country A, 996…

A:

Q: A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the 95%…

A: From the provided information Sample size (n) = 600 65% said they received a flu vaccine that is…

Q: USE THE INFORMATION BELOW TO ANSWER QUESTIONS 4 THRU 6 In 2020 researchers took random samples to…

A: Givenconfidence interval is (0.013 , 0.049)conficence level = 96%

Q: Using p′=0.167, q′=0.833, and n=180, what is the 95% confidence interval for the proportion of the…

A:

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A: Solution: Let X be the number of male students who would receive a grade C and n be the number of…

Q: Elly and Drew work together to collect data to estimate the percentage of their classmates who own a…

A: Given that Elly and Drew work together to collect the data to estimate the percentage of their…

Q: Select the correct response. a) Given the same sample data, the margin of error in a 90% confidence…

A: a) Given the same sample data, the margin of error in a 90% confidence interval would be smaller…

Q: What proportion of OSU students earn their undergraduate degrees in four years? A college…

A:

Q: Given the information: the sampled population is normally distributed, X– = 36.5, σ = 3, and n = 20.…

A: Given that

Q: Find the critical tscore to three decimal places when the Confidence Level is 90% and the sample…

A: Provided information: Confidence level = 90% Sample size = 43

Q: You want to estimate the proportion of current OSU students who were born outside of Ohio. You…

A: Given: n= 300 At 99.0 % confidence level , z score= 2.576 Need to find MARGIN OF ERROR for…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse What is the 98% confidence…

A:

Q: Find and interpret the 95% confidence interval for μ, if ¯y = 70 and s = 10, based on a sample size…

A:

Q: In a statistics activity, students are asked to determine if there is a difference in the proportion…

A: Given : Claim : there is a difference in the proportion of times that a spinning penny will land…

Q: n our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affordable…

A: Given that, n=255,x=75

Q: The figure to the right shows the results of a survey in which 996 adults from Country A, 1006…

A:

Q: The table shows the results of a survey in which separate samples of 400 adults each from the East,…

A:

Q: The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana…

A:

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A:

Q: Construct a 95% confidence interval for the slope. Round the answers to at least four decimal…

A: Given is the sample of 8 pairs of heights of fathers and sons.

Q: The table shows the results of a survey in which separate samples of 400 adults each from the East,…

A: Given : n = 400 p̂= 0.26

Q: Listed below are the amounts of net worth in millions of the 10 wealthiest celebrities in a certain…

A: From the Excel functions, Sample mean=173.3=AVERAGE(F1:F10) Sample standard…

Q: The dean of students at a large college is interested in learning about their opinions regarding the…

A: Experiment is the study used to understand something about the population. In an experiment,…

Q: The manager of a car company will select a random sample of its customers to create a 90 percent…

A: From the provided information, Confidence level = 90% Margin of error = 0.06

Q: Given below are the sodium contents in milligrams for seven brands of hot dogs rated as “very good”…

A:

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: What is the center of a confidence interval? A)µ   B)s   C)x̄   D)σ

A: Center of a confidence interval is the sample statistic. Such as sample mean or sample proportion.

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.