In a study of television ratings, groups of 4 U.S households are randomly selected. In the accompanying table, the random variable x represents the number of households among 4 that are tuned to 60 Minutes during the time that the show is broadcast.  Find the mean. ( round the answer to three decimal places)  ( You can use TI 84 to find the answer) X p (x) 1 0.539 2 0.351 3 0.095 4 0.015 a)1.586 b)0.723 c)0.722 d)0.718

Q: The upperclassmen at a high school were planning for the school's movie night. They surveyed 195…

A: Given that  Number of students in 11th grade preferred comedy = 81 Number of students preferred…

Q: 71 67 67 72 76 72 73 68 72 72

A: Data:-71 67 67 72 76 72 73 68 72 72Sample size n =10

Q: A football coach randomly selected ten players and timed how long each player took to perform a…

A: Given,Ten players with their respective times in minutes are 15 10 10 15 13 10 13 12 8 8.(a) The…

Q: If instead of 25, 80 male runners are selected for the study, what is the sampling error at 95%…

A: It is given that Sample size n = 80 Sample mean M = 53 Population SD = 5.5 Margin of error E = 0.8…

Q: HO 40 45 50 55 60 65 70 75 80 85 90 Arsenic (ppb) Ⓡ How many measurements taken in this time frame…

A: Given polygon.Want to calculate how many measurements taken in this time frame were within ppb…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Given data is: Aptitude Score (x) Frequency (f) Cumulative frequency (cf) 0 0 0 1 5 5 2 4 9…

Q: Suppose a random sample of 1458 Californians who own their own homes were surveyed. The table below…

A: Given, Outcome  Observed Frequency  Democrat 671 Republican 452 Independent/ Other 335…

Q: A sample consists of the following n = 6 scores: -2, 3, -3, 1, -3, 4 What is the Z-score for the raw…

A: Given data set is -2,3,-3,1,-3,4sample size(n)=6

Q: Joseph asks 10 of his relatives their ages and enters the responses in the table below.   Ages 90…

A: Ages904434235913127790We have to find the relative frequency of people older than 50 years old

Q: In a survey, people were asked how many times per year they had their car in the shop for repairs.…

A: From the provided information, Shop Frequency 0 84 1 83 2 35 3 53

Q: The table below shows a stem-and-leaf diagram for a sample of test scores of students in Liberal…

A: The data set from the stem and leaf plot is…

Q: A slot machine at a casino randomly awards 20% of the attempts. Assume all attempts are independent.…

A:

Q: sample proportion is p= und to three decimal places as needed.)

A: Given Number of sample of teenagers between 13 to 17 year of ages(n)=280

Q: For the sample: 45 84 73 58 54 73 52 60 51 80. Determine the mean and round to the nearest integer.…

A: Given data is 45,84,73,58,54,73,52,60,51,80sample size(n)=10

Q: ster, the following grades were recorded. Calculate the chi-square test statistic x used to…

A: Given : Grade A B C D F number 42 36 60 8 14

Q: town council commissioned a random sample of 85 households to estimate the number of four-wheel…

A: From the given information we find the estimate the number of four-wheel vehicles per household in…

Q: An experiment was conducted in which two fair dice were thrown 100 times. The sum of the pips…

A: Solution : a) The most frequent outcome of the experiment is 9 b)  The least frequent is 12

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

A:

Q: A nurse practitioner is studying the effects of sugary drinks on weight gain. To begin the study,…

A: Let us suppose the sample size equals n = 100 From the give relative frequency histogram we have the…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A:

Q: Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: p =0.18 n = 2307

Q: The scatterplot illustrates the relationship between distance and success rate of field-goal…

A: Given,

Q: For the sample: 45 84 73 58 54 73 52 60 51 80. Determine the variance and round answer to 2 decimal…

A:

Q: Please answer Question E Below is a sample of 64 responses of a survey of Ward 3 residents in…

A: Given,n=64p=0.69mean(μ)=0.69standard deviation(σ)=p(1-p)nσ=0.69(1-0.69)64σ=0.0578

Q: (c) How many rats took eight trials or more to learn the maze?

A: The provided data above is a representation for the number of rats that learned the maze in…

Q: find mean if n=2 and p=0.10

A: The concept of the binomial distribution is used by the researcher, if it is required to compute the…

Q: Using the data given below, determine whether it would unusual for a household to have no HD…

A: Given that probability of having No HD television in a small town is 0.020

Q: Checkout times. The checkout times (in minutes) for 12 randomly selected customers at a large…

A: Solution-: We find, (a) The mean of the checkout times ...min (b) The standard deviation of the…

Q: What is the name of the test used?

A: H0 : Die is fair H1 : Die is not fair

Q: In a Math 131 class at a University, the grades on the first exam are shown in the table below.…

A: Here the given data values are : 92 , 40 , 70 , 95 , 92 , 40 , 50 , 79 , 42 , 65 ,80 , 82 , 74 , 78…

Q: A city has 4 voting districts. Records from previous years show the proportion of registered voters…

A: The chi square χ2 test statistic is used to compare the proportions among the two (or) more…

Q: The heights, in inches, of the four members of a barbershop quartet of singers are listed below.…

A: The value of mean is obtained below:

Q: A random sample of participants in a diet and exercise plan were measured for the amount of weight…

A: As per our guidelines we are supposed to answer only one question kindly post the remaining question…

Q: The results for a blood test for a certain disease are shown in the table below. Based on the table,…

A: Solution: From given tabele A=290 B=10 C=3219 D=481

Q: The mean scores for students in a statistics course​ (by major) are shown below. What is the mean…

A: Weighted Mean:The general formula for weighted mean is,

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.