In​ 1997, a survey of 980980 households showed that 176176 of them use​ e-mail. Use those sample results to test the claim that more than​ 15% of households use​ e-mail. Use a 0.05 significance level. Use this information to answer the following question:     A. What is the test​ statistic?   zequals=?

Q: The following study looks at a random sample of whether a person has tattoos and the presence of…

A: Solution: The given table of data is

Q: central airlines claims that the median price of a round-trip ticket from chicago, illinois, to…

A: Sample size(n)=25 Median price=606 The number of tickets below $606 =11

Q: Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data Listed below are the…

A:

Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: November 2011, the median asking price for a home in Seattle, Washington was $279,000. Which of the…

A: Given for given statement  best way to interpret this statistic is

Q: A car company wants to know the monthly sales made in ($000), based on the brand of vehicle. The…

A: Given information: The descriptive statistics of the monthly sales of two models Hyundai and Toyota…

Q: Construct a 90% confidence interval for the true difference between the mean amounts of time spent…

A:

Q: est the claim that snack choices are related to the gender his selection of snacks purchased. Test…

A: here given , table of data for male and female  , and their choices  here ,

Q: Would you report "the mean" or "the median" or both in a research report for Attitude Toward…

A: Normal Population :    For a population distribution of Attitude Toward Internet Use following a…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given, n=119, x=31, α=0.05 Then, p^=31119=0.260504

Q: The mode is similar to the median as a measure of central tendency in that

A: Central tendency: The value that is used for describing the full data set using the central position…

Q: The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated…

A: Reputation of Company Quality of ManagementExcellentGoodFairExcellent 41255Good353510Fair241015

Q: 4. For the following four examples, indicate whether each appears to be using descriptive or…

A: Descriptive statistics use the data to include population explanations either through numerical…

Q: A firm wants to know if there is any difference in percentage of sport category watched based on…

A: Given data: Item Ages 18-34 Ages 35+ eSports 50.6 86.3 Mixed Martial Arts 30 80.7 MLS 27.3…

Q: Test at the 4% significance level if the proportion of men who have a tattoo is or is not close to…

A: Here use single proportion z test

Q: According to the Vivino website, the mean price for a bottle of red wine that scores 4.0 or higher…

A:

Q: o dream in black and white is greater than the proportion for those under 25. Complete parts (a)…

A: We have given that  Sample size n1 = 320 , n2= 306  Favorable cases x1= 74 , x2= 15…

Q: A researcher wants to study whether there is a relationship between personality type and the type of…

A: The given data is,     Types of class   Total     In-person Online   Personality type…

Q: D. What can you conclude about whether there was a significant difference between the scores of the…

A: Given:

Q: Background The Food and Drug Administration (FDA) tries to find out whether there is a relation…

A: The Food and Drug Administration (FDA) tries to find out whether there is a relation between the…

Q: If a teacher wants to assess whether there is a relationship between males and females on test…

A: Test performance Males Females Let n group of males and females are writing an exam The test…

Q: A middle school wanted to examine if students' sense of school belongingness increased after…

A: From the given information, the variables are students sense of the school belongingness and the…

Q: An auditor is checking the last five years of scholarship awards in a university's music department…

A: From the provided information, The test statistic is 14.81. The level of significance (α) is 0.05…

Q: The following are the prices (in dollars) of the six all-terrain truck tires rated most highly by a…

A: Answer 158.00,195.00,154.00,127.65,121.99,126.00sample size [n] =6

Q: In 2014, approximately 2% of hourly rate workers were being paid at the federal minimum wage level…

A: The objective is to find out that an increase in the minimum wage has a greater effect on the mean…

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: Find the: 1.) Null Hypothesis: ______________ 1.1.) In symbol, Ho: µ = __________ 2.) Alternative…

A: Test is that whether the average net take-home pay in a day is $250

Q: e) You are required to test at the 5% level of significance the hypothesis that th monthly earnings…

A: xbar = 109 se = 1.34 n = 23

Q: A researcher is using a repeated-measures design to test for mean differences among four treatment…

A: From the provided information, Number of treatments (k) = 4 Each study consist of 18 score in each…

Q: An online shop owner believes that 85% of her customers will want to go into a real store. She…

A: It is given that the an online shop owner believes that 85% of her customers will want to go into a…

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

A: Given that: n = 900 X = 293 P = 47%  By using proportion test to solve this problem

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: A congressperson wants to come up with a single value to describe the prices of homes in their…

A: To measure the central tendency of a dataset, mean, median or mode can be used. Generally, mean is…

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.