The random variable X is the crew size of a randomly selected shuttle mission. Its probability distribution is shown below. Complete parts a through c X 4 5 6 2 P(X=x) 0.025 0.045 0.306 7 8 0 0.187 0.431 0.006 a. Find and interpret the mean of the random variable. = 5.947 (Round to three decimal places as needed.) Interpret the mean. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places as needed.) OA. The average number of persons in a shuttle crew is person(s). OB. The most common number of persons in a shuttle crew is person(s).

Q: When taking a 19 question multiple choice test, where each question has 4 possible answers, it would…

A:

Q: Using the same measure of support for gun control, the researcher is interested in how the…

A: Given that  The researcher suspects that ML who say religion is unimportant will be more supportive…

Q: A random sample of prices of petrol per litre (in p per litre) from UK filling stations was taken…

A: Given : 1 litre =0.22 gallons 95% CI for mean price of petrol per litre is (131.42 , 142.22)

Q: After looking at MLs, the researcher decides to look at the entire sample. In her analysis the…

A: We use the given output to find out the solution.

Q: Question 3 Part 1: Two fair dice are rolled (a) Calculate the probability that two sixes will…

A: The question is about probability Given : Two fair dice are rolled

Q: Short Answer 1. Use the normal approximation to find u and σ in a binomial distribution with n =…

A: The following information has been given: The total number of trials are n=1000. The probability of…

Q: FIND THE FF. 1. Q1 2. D5 3.P75

A: The following information has been computed from the given data: The total number of observations…

Q: An article in Journal of Food Science [2001, Vol. 66(3), pp. 472-477] reported on a study of potato…

A: Given that By using excel single factor anova

Q: Let event C=taking an English class. Let event D=taking a mathematics class. Suppo P(C) =0.75,…

A: The question is about probability of events Given : C : Taking an English class D : Taking a…

Q: claims that people will no longer have to wait as long.     Null hypothesis: mean waiting time =…

A: It is given that  Mean waiting time = 8.4 minutes  Claim: People will no longer have to wait as…

Q: 3.  Find the confidence interval. a) In a Gallup poll of 1000 adults, 649 of them said that they…

A: 3(a) We have given that,  Favorable cases (X) = 649 and sample size  (n) = 1000 Then,  We will find…

Q: Question 8: Consider a random sample X₁, X2, ..., X, from the pdf f(x; 0) = (0+1)xº 0≤x≤1 where 0>…

A:

Q: mean of 100 with a standard deviation of 15. A researcher thinks that a diet high in raw cornstarch…

A: Given Mean=100 Standard deviations=15 X-bar=140

Q: Mood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, w…

A: According to Given Data Systolic Diastolic 134 87 115 83 113 77 123 77 119 69 118 88…

Q: A certain three-cylinder combination lock has 80 numbers on it. To open it, you turn to a number on…

A:

Q: A psychologist is interested in the mean IQ score of a given group of children. It is known that the…

A: We have given that,  Sample mean (x̄) = 116, population standard deviation (σ) = 13 and sample size…

Q: Let X₁, , Xn be a random sample from a large population following a uniform distribution over [0,…

A:

Q: Let X represent the number of voters polled who prefer Candidate A. Use some form of appropriate…

A: here AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION , PLZ REPOST FOR REMAING QUESTION…

Q: The following table summarizes the smoking status of people living in an apartment complex. A random…

A: The provided information is    Male Female Total Smoker 25 12 37 Non-Smoker 59 45 104 Total…

Q: A metal lathe that produces machine bearings is out of control if the mean diameter of the bearings…

A: Given that  Sample size n =50 Sample mean =0.46 Standard deviation =0.075

Q: 0.98 is 62.5% of what number?

A: Solution-: 0.98 is 62.5% of what number?

Q: particular

A:

Q: i see the same solutions, i'll downvote you. Follow the instructions. Typewritten for upvote. No…

A: x y Grade 4 Grade 8 89 81 84 75 90 66 89 76 88 80 77 59 80 74

Q: 4. Researchers conducted a study of the effects of three drugs on the fat content of the shoulder…

A: Given data is :

Q: Hypotheses Η :μ = 78 H:μ<78 a Ho:μ=90,000 00.000 Type of Test (one-tailed or two- tailed)

A:

Q: Of the data sets below, which has standard deviation 0? Set A: 1, 2, 3, 4 Set B: 1, 1,4,7 Set C: 0,…

A: The  Data set D. 6,6,6,6 Σx=24 Σx2=62+62+62+62=144n=4The standard deviation is…

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: Given X-bar=75.8 n=424 Standard deviations=9.5

Q: (a) Find the probability that a married couple watches the show. The probability is (Round to three…

A: Given P(M) =0.5 P(W) =0.6 P(M/W) =0.8

Q: The price of oil was steadily increasing by 3% a year for a 10-year period. The cause was general…

A: the hidden variable that caused this jump in prices of oil in 2006 could be the age of the drilling…

Q: Eshani is a football player who is responsible for taking the penalty kicks for her team when…

A:

Q: How many women use at most one brand? How many women do not use any of the 2 brands?

A: here given  Forty women were asked regarding 2 known brands of llipstick, it was found out that: 15…

Q: For the POSTER: Write -Objectives/ problem statement or research questions according to your data…

A: Problem statement for this dataset might be -

Q: Find the value of the standard score, z, and determine whether to reject the null hypothesis at a…

A:

Q: 1. The average test score of entire school is 78 with standard deviation 10. A teacher took a random…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A certain security system contains 12 parts. Suppose that the probability that each individual part…

A: Given that: A certain security system contains 12 parts. The probability that each individual part…

Q: General Direction: Perform each of the following steps. a. Find the Spearman rank correlation…

A: Given data: Number of students 10 6 17 8 11 Per-pupil cost 7200 9393 7385 4500 8203

Q: the accompanying table provides a probability distribution for the number of major hurricanes, Y,…

A: The following information has been provided: The probability distribution of major hurricanes is…

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: given the hypotheses H0 :S=S0, HA :S̸=S0, which are tested with a test statistic Y . When H0 is…

A: The hypothesis to be tested is: H0: S=S0 vs. Ha: S≠S0

Q: The scores on a standardized test are normally distributed with a mean of 80 and standard deviation…

A:

Q: You may need to use the appropriate appendix table or technology to answer this question. A survey…

A:

Q: A random sample of 225 adults was given an IQ test. It was found that 112 of them scored higher than…

A: Given that  Sample size n =225 Favorable cases x =112 Sample proportion p^=x/n  =112/225 =0.498

Q: The department of commerce for a country released the data below for the quarterly retail e-commerce…

A: Given: n = 8 Formula Used: Test-statistic t = bSE Where,  b = n∑XY-∑X∑Yn∑X2-∑X2 SE = SSSxx SSxx =…

Q: General Direction: Perform each of the following steps. a. Find the Spearman rank correlation…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: What is the probability a randomly selected 30-year-old in 1970 earned more than his or her parents…

A: Given, In 1970,80% of 30-year-olds in a country earned more than their parents did at the age of…

Q: The following table displays data on height of students (measured in centimeters) in a Business…

A: Given information: Height (m) students 140 ≤ y &lt; 145  5 145 ≤ y &lt; 150 6 150 ≤ y &lt;…

Q: Question 2 The following table displays data on height of students (measured in centimeters) in a…

A:

Q: (a) The table below shows the Frequency Distribution of Books on Weekly  Sales in GHS (cedis) in a…

A:

Q: The list below contains a number of statements about using confidence intervals of proportions.…

A: The objective is to find the true statement from the given list.

Q: In a batch of 8000 clock radios 3% are defective. A sample of 7 clock radios is randomly selected…

A: Given P=3% are defective=0.03 q=1-P   =1-0.03   =0.97 n=7