A company is in the business of finding addresses of long-lost friends. The company claims to have a 70% success rate. Suppose that you have the names of six friends for whom you have no addresses and decide to use the company to track them. a) Make a histogram showing the probability of r = 0 to 6 friends for whom an address will be found. (use the uploaded image to view choices)   b) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your standard deviation to two decimal places.) ? =  ______ friends ? =  ______ friends   c) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.)

Q: 6. The size of fish is very important to commercial fishing. A study conducted in 2012 found the…

A: From the provided information, Mean (µ) = 42.1 cm Standard deviation (σ) = 2.98 cm X~N (42.1, 2.98)…

Q: Suppose you have a population of adult male basketball players and you know their mean height is 190…

A: given data normal distributionμ = 190 cmσ = 7.2 cm

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: From the provided information,Mean (µ) = 162000Standard deviation (σ) = 36000Sample size (n) = 58

Q: expected number of students who read the book online.

A: Students purchased hard copy =P(H) = 60% =0.60 Students print out from the web =P(W)= 25% = 0.25…

Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

Q: The p-value… is used to determine the Margin Of Error measures the number of standard deviations…

A: p value is a probabilty  which indicates the decision about null hypothesis assuming true  so that…

Q: Most colleges here in the Philippines requires applicants for admission to take the College…

A: Consider X : scores on CAT X~Nμ=527,σ=112

Q: The test statistic of z= - 2.18 is obtained when testing the claim that p <0.56. a. Using a…

A: a. The claim of the test is p&lt;0.56 which is left tailed test. The Alpha value is 0.01. The…

Q: SOLVE STEP BY STEP IN DIGITAL FORMAT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 3. Cables manufactured for…

A: normal distributionμ=0.13σ=0.005specification : 0.12 &lt;x&lt; 0.14

Q: A student takes a multiple choice exam with 10 questions, each with four possible selections for the…

A: Given that, A student takes a multiple choice exam with 10 questions, each with four possible…

Q: the probability that a ball dropped from a certain height will strike the ground is 80 percent and…

A: Given: Number of trials or balls (n) = 12 Probability of success  here (p) = 0.80 Let X ~ Bin(12,…

Q: Suppose that the distribution of the scores of students in Statistics Assignment 1 is roughly…

A: GivenMean(μ)=85standard deviation(σ)=5sample size(n)=16

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: the household rather than the male in the household. A coupon book was sent at random to either the…

A: Solution: Given information: n= 50 Sample size  xd= 1.5  Diffrence of sample mean sd=4.75 Difference…

Q: r a standardized psychology examination intended for psychology majors, the historical data show…

A: Given: The corresponding z score can be calculated as: The distribution will be normal as the…

Q: A population has a mean of u = 30. If 3 points are added to each score, what is the mean for the new…

A: Given :  Mean(μ)=30 and N=3

Q: If the mean of the number of sales of houses is fifty-six, and the standard deviation is thirty-six,…

A: We have given, The mean number of sales of houses is x¯=56. And the standard deviation is σ=36.

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A pet store has 500 rats whose weights have a mean of 16oz with a standard deviation of 1.1 oz. You…

A: Given Data Population Mean,μ = 16.0 Population Standard Deviation,σ = 1.1 sample…

Q: A distribution of scores has a mean of 51.5, a median of 51.2, and a mode of 51. Based on this…

A:

Q: The weights of college football players are normally distributed with a mean of 193 pounds and a…

A: Mean = 193 Standard deviation = 53

Q: A large normally distributed population has a mean of 502 and a standard deviation of 25. If the…

A: Given,sample size(n)=36mean(μ)=502standard deviation(σ)=25

Q: A final exam in science 160 has a mean of 73 with a standard deviation of 7.8. If 25 students are…

A: Given information- Population mean, µ = 73 Population standard deviation, σ = 7.8 Sample size, n =…

Q: The net weight of a can of salmon is a random variable with a mean of 6.21 ounces and a standard…

A: Solution

Q: A final exam in Science 150  has a mean of 80 with a standard deviation of 8. If 25 students are…

A: Given: μ = 80 σ = 8 n = 25

Q: Leave all probabilities as percentages. Define x on all problems with data. The lengths of human…

A: Let x be the lengths of human pregnancies which follows normal distribution with mean 268 days and…

Q: If X is a number on standard dice roll, find the standard deviation (o) of X.

A: The random variable is a number on a standard dice roll.If a standard die is rolled, then its…

Q: Suppose you have a population of adult male basketball players and you know their mean height is 190…

A: For given data , Mean : μ=190cm standard deviation : σ=7.2 cm X=height of  adult male basketball…

Q: A set of final examination grades in an Introductory Statistics course is normally distributed with…

A: We have given that,  X be the test score with mean (μ) = 73 and standard deviation (σ) = 8 and The…

Q: A professor using an open-source introductory statistics book predicts that 60% of the students will…

A: given data, 60% - student will purchase a hard copy of the book,25%- will print it out from the…

Q: CAN SOMEONE HELP ME SOLVE THIS WORD PROBLEM?

A: It was stated that for a standardized psychology examination intended for psychology majors, the…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: A distribution of scores has no mode and the same median and mean values. This indicates that the

A: From the given information above, A distribution of scores has no mode and the same median and mean…

Q: A notable indicator of a baby's health is the weight gained in the first year of the baby's life.…

A: From given data we have ;   sample size =15 Point estimate  = 5.658 standard deviation =1.869   here…

Q: The Powerball lottery jackpot has a winning probability of 1/189,000,000.  If you only consider the…

A: From the given information, Consider, X is the random variable that shows the net gain.  Pr(winning…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: dial to set the water temperature. When the “babysafe” setting is selected and the tub is filled,…

A: Let X be the random variable from normal distribution with mean (μ) = 93.2° F and standard deviation…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.