On the right are the numbers of customers served by a restaurant on 40 consecutive days. (The numbers have been ranked lowest to highest.) Find the 75th percentile.

Q: What percent of the department faculty have less than 25 years of service? Answer:  % (b) If a…

A: From the given histogram we need to answer certain questions.

Q: A statistics professor made the following histogram for the scores on her class’s first exam.   If…

A: From the Histogram, the scores and the corresponding frequencies are, Given that the passing score…

Q: Q7: The concentration of nicotine... The concentration of nicotine was measured in a random sample…

A: Given Information : The concentration of nicotine was measured in a random of 40 cigars . The data…

Q: For the 20 test scores shown, find the percentile rank for a score of 88. 72 63 92 74 86 50 77 82 98…

A:

Q: n the brackets, how did you know to use the 21 and 20 percentiles?

A: The number of observations, The data set…

Q: Which of these would be considered a transformed score? a. percentile ranks and t scores b. z scores…

A: Transformed scores are those scores that have been converted from raw scores to meaningful score…

Q: Find the percent of 16/20 and 4/20. What are the relationships between the answers?

A:

Q: Find the z-score that cuts off 65% in the body on the left.

A:

Q: Alex is 80th in his class of 320 students. What is his percentile rank in class?

A: Data given p=80, n=320

Q: On the right are the numbers of customers served by a restaurant on 40 consecutive days. (The…

A: Arranging the number of customers served by the restaurant on 40 consecutive days in ascending…

Q: A research firm claims that the distribution of the days of the week that people are most likely to…

A: The question is about categorical data analysis.Given :

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given that mean = 32 hours Median = 28.2 hours 7th percentile = 17 hours

Q: For Roger Maris 14 homerun seasons of 5,  8,  9,  9,  13,  14,  16,  19,  23,  26,  28,  33,  39,…

A: To find the percentile

Q: A group of students start a walking club. Each student recorded their walking time in April 2022 as…

A: We know that,  Mean = ΣXi/n where ΣXi is the sum of all the terms and n is the sample size.  Here…

Q: The following values represent the heights of 12 students (in inches) taking a math class. 72, 63,…

A: In the data set, the number of students hights are given (n) is 13.

Q: Find the z-score that corresponds to the 63rd percentile

A: we have to find the Z-score that corresponds tothe 63rd percentile.

Q: The 20th percentile is how many inches?

A: The mean is 64 inches and the standard deviation is 2.5 inches.

Q: A sports statistician recorded the speed of every serve made by a certain tennis player at the U.S.…

A: It is given that the mean serve speed in the tournament is 98 miles.The distribution of the serve…

Q: A professor grades students on three tests, four quizzes, and a final examination. Each test counts…

A: It is given that Sara has test scores of 95, 70, and 86, quiz scores are 91, 66, 76, 85 and her…

Q: Allie has 5 exam scores 98, 94, 84, 95 and 95 in math class. What score does she need on the final…

A: According to questionAllie has 5 exam scores 98, 94,84,95 and 95 in math classWe have to calculate…

Q: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: se answer the question in the photo. TY!

A: GIven:

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given information- Mean of the data = 35 hours Median = 31.2 hours Sample size = 24 families We have…

Q: lecture(12.1): A statistics class is made up of 22 students learning on line and 15 studying in…

A: No. of students learning stats online=22 No. of students learning stats in person=15 The objective…

Q: Find the 90th percentile. So 10% of the T

A: Let X be the lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000…

Q: the value of so that 92.3% of the data lies to the right of

A:

Q: calculate the 30th percentile of the data shown, 3.4,3.9,7,11.7,14,20.3,26.2,27.8,28.9

A: given data 3.4,3.9,7,11.7,14,20.3,26.2,27.8,28.9arrange data in ascending…