KSuppose the following data represent the ratings (on a scale from 1 to 5) for a certain smart phone game, with 1 representing a poor rating. Complete parts (a) through(d) below.(c) Compute and interpret the mean of the random variable x.The mean is stars.(Round to one decimal place as needed.).Which of the following interpretations of the mean is correct?+observations will approach the mean of the random variable.OA. As the number of experiments decreases, the mean ofOB. As the number of experiments increases, the mean of the observations will approach the mean of the random variable.mean of the random variable in most experiments.OC. The observed value of an experiment will be less thanOD. The observed value of an experiment will be equal to the mean of the random variable in most experiments.(d) Compute the standard deviation of the random variable x.The standard deviation is stars.(Round to one decimal place as needed.)G√51.(0,0)More2345265221084723478111,229X

Answered: Image /qna-images/answer/a17622a6-41a0-4257-8567-ac44f1f72eac.jpg

Answered: K Suppose the following data represent…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please answer number 3
From candy to jewelry to flowers, the average consumer was expected to spend $104.63 for Mother’s Day in 2005, according to a Democrat & Chronicle article. Local merchants thought this average was too high for their area. They contracted an agency to conduct a study. A random sample of 60 consumers was taken at a local shopping mall the Saturday before Mother’s Day and produced the sample mean amount of $94.27. If σ = $29.50, does the sample provide sufficient evidence to support the merchants’ claim at the 0.03 level of significance? 1. Do you recognize any flaws in this study and what conclusions can you draw? The article “Well-fed Crickets Bowl Maidens Over” reports that female field crickets are attracted to males that have high chirp rates and hypothesized that chirp rate is related to nutritional status. The usual chirp rate doe male field crickets was reported to vary around a mean of 60 chirps per second. To investigate whether chirp rate was related to nutritional…
Assume the mean and variance of 5 observations are 1 and 5, respectively. If 5, as one of these five observations, is removed, which of the followings gives the variance of the remaining observations? Select one: 2 1.25 0 None 0.75
Suppose that the distance of fly balls hit to the outfielder ( in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls.a. In words define the random variable. X________.b. What is the probability that the 49 balls traveled an average at least of 240 feet. Include a complete shaded graph, and write the probability statement. c. Find the 90th percentile of the distribution of the average of 49 fly balls.
A fair coin is tossed three times. Let X denote 0 or 1 according as a head or a Tail occurs onthe first toss, and let Y denote the number of heads which occur. Determine the following: a. the distribution of X and Y;b. E(X) and E(Y);c. Variance and SD of X; andd. Variance and SD of Y
The following sample observations were randomly selected: X Y 5 4 10 7 3 7 4 6 6 5 What is the coefficient of correlation? Select one: a. 0.185 b. 0.001 c. 0.034 d. 0.089
Using a pooled sample estimator, o , assumes the two populations have O A. different means. O B. the same mean. O C. the same variance. O D. different variances.
Thirty percent of the students in a class of 100 are planning to go to graduate school. The Variance of this binomial distribution is: A. 16 B. 21 C. 25 D. 36 Cat
What the variance for the following Sample of n - 3 scores? Scores: 1, 4, 7 06 15 3.
An analysis of variance produces SSbetween = 75 and MSbetween = 15. In this analysis, how many treatment conditions are being compared? Select one: a. 3 b. 4 c. 5 d. 6
A sample of n = 10 scores has a mean of 20. A person with a score of 1 is replaced with a person who has a score of 31. Find the new mean. a.31 b.17 c.21 d.23
Solve all parts plz

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