In a survey, 38 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $47 and standard deviation of $10.

Q: Use the sample data and confidence level given below to complete parts (a) through (d). A research…

A: GIVEN DATA,  n=971x=554P^=Xn=554971=0.5705CI=0.99α=1-0.99=0.01we have to find out the confidence…

Q: Use the sample mean(78.5)and sample standard deviation (12.3671)in your calculations below. Use…

A: Given that:

Q: An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair…

A:

Q: As part of the National Health and Nutrition Examination Survey, subjects were asked how long they…

A: The question is about descriptive stats Given : Data :   To find : Value of mean

Q: A set of 100 values has a median value of 40. What is the value of the 75th percentile in this set…

A: Introduction: Percentiles are used in statistics to divide a set of numerical values into 100 equal…

Q: A survey was conducted that asked 1002 people how many books they had read in the past year. Results…

A: Confidence interval is a part of interval estimation. It is the boundary that is used to estimate…

Q: Find the range , the standard deviation, the variance for 45, 75, 84, 58, 81, 65 , 98,63,76

A: Range = Maximum - Minimum = 98 - 45 = 53   The standard deviation can be determined using the…

Q: An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair…

A: An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair…

Q: find the z-number associated with a 92% level of confidence. find the z-number associated with a…

A:

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: The ACT math scores of a particular high school in New Jersey are approximately normally…

A: Given that 99.7% of the scores, centered about the mean, are between 200 points and 800 points. So…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: you know 10% of the people in Amsterdam describe themselves as hipsters. you ask 400 respondents if…

A: Solution: Given data : p = 10% = 0.10 Sample size (n) = 400 To find: standard deviation of the…

Q: When you have your blood pressure taken, the larger number is the systolic blood pressure.…

A: We need to construct the 95%95\% confidence interval for the difference between the population…

Q: ould have the right to marry. (The 2014 data were collected before the 2015 US upreme Court decision…

A: There are four types of level of measurement, i.e.,  Ratio scale: data is continuous and have a…

Q: A survey was conducted that asked 984 people how many books they had read in the past year. Results…

A: Sample size is, Sample mean is, Sample standard deviation is, Confidence level is The objective is…

Q: highway mileage (mpg) for a sample of 8 different models of a car company can be found below. Find…

A: given data, sample size=8we have to find out the mean , median, mode and  standard deviation for the…

Q: In June, an investor purchased 400 shares of Oracle (an information technology company) stock at $65…

A: The weighted mean calculates the average of a dataset by considering the significance of each data…

Q: A data set has five values. The 45th and the 55th percentile are both 25. The largest value is 125,…

A: We have to given that,   data set has 5 values i.e. n=5 and 45th percentile = 55th percentile = 25…

Q: Thirty randomly selected students took the calculus final. If the sample mean was 74.2 and the…

A: From the provided information, Sample size (n) = 30 Sample mean (x̅) = 74.2 Standard deviation (s) =…

Q: In a moderately skewed distribution, the value of Median is 42 and value of Mode is 40. Find the…

A: Given, x¯ =meanMo =mode=40Me = median =42

Q: 3. Compute for the following, given these data: 132, 144, 127, 152, 101, and 165. a. Coefficient of…

A: Provided data is:132, 144, 127, 152, 101 and 165.Arranging data in ascending order; 101, 127, 132,…

Q: A candy manufacturer has replaced 5.17% of their chocolate bars with a new mystery flavor. Find the…

A: Given: Sample size (n) = 424 p(chocolate bars with a new mystery flavor) = 5.17% = 0.0517

Q: 2. Construct a 95% confidence interval to estimate the proportion of Wingate female students that…

A: total number of female students =181 number of students who are left handed=15

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: A survey was conducted that asked 1005 people how many books they had read in the past year. Results…

A: Given,sample meaan(x¯)=14.3sample standard deviation(s)=16.6sample size(n)=1005degrees of…

Q: location on the two different dates is in the table. Estimate the mean difference in traf een the…

A: Given Sample size =10 Sample standard deviation=1538.35

Q: Suppose a government department would like to investigate the relationship between the cost of…

A: The data shows the a random sample of 10 homes heating cost and square footage.

Q: C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals should have…

A: Given information: GSS 2014 and GSS 2018 respondents were asked their opinion on whether…

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: A survey was conducted that asked 972 people how many books they had read in the past year. Results…

A: From the provided information, Sample size (n) = 972 Sample mean (x̅) = 14.1 Standard deviation (s)…

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given: X¯1=77n1=259X¯2=90n2=344X¯3=66n3=171

Q: National park services, a bureau of the US government responsible for park management, is interested…

A: For current year: The mean can be obtained as: Thus, the mean is 74.56. Arranging the data set into…

Q: in 2020, a sample of 12 monarchs had an average wingspan of 6.3 cm. this year a new sample of 12 had…

A: Given that  For year 2020 Sample size (n1)=12 monarchs  Sample mean=6.3 Population standard…

Q: Four of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A:

Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: SavingsFrequency$0 - $199330$200 - $39994$400 - $59947$600 - $79919$800 - $99913$1000 - $11997$1200…

Q: A survey was conducted that asked 1016 people how many books they had read in the past year. Results…

A: Given x-bar=13.7 S=16.2 n=1016

Q: The weight of football players is normally distributed with a mean of 200 pounds and a standard…

A: Here we have given the, weight of football players is normally distributed with a mean of 200 pounds…

Q: A study of new home prices was conducted in a neighborhood of 2000 homes. The median price of a new…

A: It is stated that: The number of new homes included in the study is 2000.  The median price of a new…

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: