Measure the significance of the difference in the height of Chris's friend before and now with a significance of 5% and the distribution of the data is not normal. No Previous Now 1 100 104 2 96 101 87 97 4 77 96 5 80 102 3.

Q: your score in the original distribution?

A: Since , the original distribution has a mean 35 and standard deviation is 8 Also , the new…

Q: Calculate the 37th and 84th percentiles of the data set shown below. 1. 12 7 30 25 8 28 26 16 18 P37…

A: 1 5 7 8 12 16 18 25 26 28 30  n= 11

Q: The mean can be thought of as the balancing point of a distribution. According to this description,…

A: Mean          A mean is the simple mathematical average of a set of two or more numbers. The mean…

Q: The average retirement age in America is 65 years old. Do small business owners retire at an older…

A: c For the given sample values, x¯=68.0625, from the excel function, =AVERAGE(F1:F16)s=5.9830, from…

Q: Professor Pete's calculus class has the following scores: 19 21 31 32 37 45 52 55 62 63 63 65 65 77…

A:

Q: z = 1 is what percentile?

A: It is given that z =1.

Q: What the different shapes of the distribution tell us about the measures of central tendency.

A: The measures of central tendency are mean, median and mode.

Q: What is the median for the population of scores shown in the frequency distribution table? X     f 5…

A: Step 1:   The frequency distribution table is, Step 2: Obtaining the cumulative frequencies…

Q: The distribution of heights of adult men is approximately normal. A man whose standardized height is…

A: From the given information,Considering the heights of adult men is X which is normally…

Q: Test the hypothesis, at the 5 percent level of significance, that the mean weight of a newborn is…

A:

Q: When data is normally distributed the mean equals the mode. True

A: Normal distribution

Q: Recall the ordered data. 17 22 27 27 28 31 33 37 The 20th percentile will occur at a position…

A: Given information: The data are arranged in ascending order as given below: 17, 22, 27, 27, 28, 31,…

Q: If a set of data is normally distributed, what percent of the data falls between a z- score of -090…

A:

Q: Find the proportion of Normally distributed observations with a z-score below 2.56. Give your answer…

A: Given Z=2.56

Q: Assume that IQ scores are normally distributed with μ = 100 and σ = 15 What percent of IQ scores…

A: The normal distribution is the most useful theoretical distribution for continuous variables.  For…

Q: (c) without assuming anything about the distribution of times, what can be said about the percentage…

A:

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A:

Q: Number of students Final Scores 12 10 20 30 40 50 60 70 80 90 100 For this histogram showing data…

A: Option 1 correct

Q: A stock analyst wondered whether the mean rate of return of​ financial, energy, and utility stocks…

A: (a) The claim of the hypotheses test whether the mean rate of return of​ financial, energy, and…

Q: A professor in the psychology department would like to determine whether there has been a…

A:

Q: The table displays the scores of students on a recent exam. Find the mean of the scores to the…

A: Topic-mean

Q: Determine the percentage of variation in the observed values of the response variable that is…

A: We have given that,  The independent variable X and dependent variable Y is,  X :-     25.9     31.5…

Q: The scores in a high school are normally distributed with a variance of 225. Suppose that 27.43% of…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: Calculate the 5th percentile of the data shown 1.4 1.5 3.5 3.7 5.7 7.8 20.6 21.4 26 29.1

A:

Q: "Aiden receives a z score of -.3 on an exam that is normally distributed, what percentage of the…

A: Given : Aiden receives a z score of -.3 on an exam that is normally distributed.

Q: The table to the right shows selected ages of licensed drivers in one country and the corresponding…

A: Given data: The table shows the selected ages of licensed drivers and their corresponding…

Q: The table displays the scores of students on a recent exam. Find the mean of the scores to the…

A:

Q: The distance of Josh throwing a javelin are normally distributed. What is the percentage of these…

A:

Q: A sample of college students was asked how much they spent monthly on cell phone plans. Approximate…

A:

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: In statistics, variance is the average squared distance of each data points from the population…

Q: Find the proportion of Normally distributed observations with a zz-score above -2.84. Give your…

A: Given the proportion of Normally distributed observations with a z-score above -2.84

Q: The number of days travelers purchase their airline tickets ahead of their flights can be modeled by…

A:

Q: A population is normally distributed with µ = 145 and σ = 20. Which is the percentile rank for X =…

A:

Q: carl looks at his data and finds that it looks distorted, as though a large number of values are…

A: Given that  Car looks at his data and finds that it is looks distorted , as though a large number of…

Q: In normally distributed data, what percent of the data lies on the interval 2 standard deviations…

A:

Q: Calculate the 60th percentile of the data shown x 9.4 9.8 15.3 19.2 20.5

A: Answer - Calculate the 60th percentile of the data shown x 9.4 9.8 15.3 19.2 20.5

Q: Calculate the 13th and 64th percentiles of the data set shown below. 29 18 3. 12 17 28 23 9 21 22…

A: Arrange the given data in ascending order3, 9, 12, 17, 18, 21, 22, 23, 28, 29sample size(n)=10

Q: The mean weight of 200 students is 50 kg and SD is 4 kg. If weight is normally distributed then find…

A: Solution: Let X be the weight of a student. From the given information, X follows normal…

Q: Explain what would happen to the F ratio of this analysis of variance if 2 points were added to each…

A: We need to explain what would happen to the F ratio of this analysis of variance if 2 points were…

Q: what is the distribution of the coefficient of variation?

A: A coefficient of variance is used to determine the precision of an estimated value. It is primarily…

Q: The grades for 30 students on the most recent exam are given in the data table below: Round your…

A: Given data, 60 80 70 70 80     90 80 70 80 80     60 70 70 70 70     90 70 70 80 90…

Q: A normally distributed data set has a mean of 0 and the standard divitation of 2. What is the…

A: Given,mean(μ)=0standard deviation(σ)=2

Q: A study reported a correlation between height and weight r = .5, p < 0.05. What is the proportion of…

A: Here correlation between height and weight is r = 0.5 and p&lt;0.05

Q: How do you find proportion of normal distributions ? Because I don't understand how a score less…

A: Let us assume X be a normal distribution with mean µ and standard deviation σ. the prportion of data…

Q: team owners used this data to begin a lawsuit that claimed re ns. They want to perform statistical…

A: Given: Total number of challenges, N = 316 Number of calls overturned, n = 154 p = 50% = 50100=0.50…

Q: Find the proportion of Normally distributed observations with a z-score above -1.93. Give your…

A:

Q: If z=1.28 find the percentile (nearest whole number,  for the z score.

A: From the given information, Z= 1.28 From the z value, percentile can be computed as: Using standard…

Q: find the actual percentage in the data set, sort the DRIVE variable and count how many of the data…

A: From the given information, there are 35 drives. The values of drives, which are less than 25 are 5,…

Q: Given the data below: 8.45 9.20 8.56 9.13 8.67 8.85 9.17 a) Find the 60th percentile (P60). b) What…

A: We have given that data  First Arrange data in ascending order.  Arranging Observations in the…