Nielsen Company the mean number of TV sets in a US Household in 2013 was 2.24. Standard deviation is 1.4. A sample of 90 household is drawn.  The probability that the sample mean number of TV sets is greater than 2 is  The probability that the sample mean number of TV sets is between 2.5 and 3 is  The 40th percentile of the sample mean is  it would be or wouldn't be usual because the probability of the sample mean being less than 2 is

Q: If the mean body tempe tire of a bird is 75 degrees with a standard deviation of 4 degrees, which is…

A: Given information- Population mean, μ = 75 degrees Population standard deviation, σ = 4 degrees Let…

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: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: The National Health and Nutrition Examination Survey (NHANES) reported that in a recent year, the…

A:

Q: a division wide aptitude test in mathematics was conducted to 1000 students. the mean of the test is…

A: Given : No. of students : Sample size (n) = 1000 Let X : Scores in aptitude test in mathematics…

Q: Americans drank an average of 34 gallons of bottled water per capita in 2014. If the standard…

A: Let the random variable X denote the American drank gallons of bottled water. Given that average…

Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A:

Q: The test scores in a class are normally distributed with a mean score of 77. if the standard…

A: The distribution of test score are normally distributed with mean of 77. Now consider the standard…

Q: The distribution of scores for the third exam in a statistics course has a mean of 74 and a standard…

A: Given Information: Mean, μ=74 Standard Deviation, σ=15 Sample Size, n=36

Q: 2. Suppose that the mean lifetime of a random sample of 25 batteries produced by a factory is 700…

A: Solution: 2. Let X be the lifetime of a battery. From the given information, X follows normal…

Q: Solve the problem. The probability that an individual is left-handed is 0.18. In a class of 90…

A:

Q: What is the probability that your score on an exam will be less than a 60, if the mean on the exam…

A: We have to find probability that your score on an exam will be less than a 60....

Q: According to the Nielsen Company the mean number of TV sets in a US household in 2013 was 2.24.…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

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: 2. The average American walks 4,500 steps per day with a standard deviation of 900 steps. If this…

A: GIVEN DATA normal distributionμ = 4500σ = 900

Q: Direction: Compute and Illustrate the distribution of the mean. 1. The average price of a computer…

A: Given,sample size(n)=27mean(μ)=789standard deviation(σ)=348

Q: The average price of a college math textbook is $151 and the standard deviation is $26. Suppose that…

A: Given Data: Let X represent the random variable X~ Normal (151, 262)   n=42 Therefore, X¯~ Normal…

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

A:

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: In a distribution with 30,000 pieces of data, a mean of  2002 & a range of 400, which of these…

A: Introduction: The size of the data set, that is, the number of observations is, n = 30,000. The mean…

Q: A population has a mean of 80 and a standard deviation of 7.A sample of 49 observation will be…

A:

Q: The mean of a test is 400 and the standard deviation is 75. It is normally distributed. A sample of…

A: 1] Mean μ=400 2] standard deviation σ=75 3] n=25 4] μx¯=400σx¯=σn=7525=15

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: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24…

A: Mean = 2.24 Standard deviation = 1.3 Sample size = 95

Q: The data {9, 5, 5, 9, 2} represent a random sample of the number of days absent from school for five…

A:

Q: at you wanted to figure out your average winnings during a trip to Las Vegas. You know that the…

A: We use z-interval or confidence interval by using the z -distribution if the value of population…

Q: students has an average of 300 dollars and a standard deviation of 1,000. Suppose that we take a…

A: It is given that the random variable X i.e, the amount of money in savings accounts follow normal…

Q: The average teacher's salary in Connecticut (ranked first among states) is $57,337. Suppose that the…

A: Given that  Mean = M = 57337 Standard deviation = SD = 7500 X ~ Normal ( M = 57337 , SD = 7500 )…

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: Given, Salaries of the teacher follow normal distribution with mean $41,000 and standard deviation…

Q: The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A:

Q: he manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…

A:

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: xP(x)00.00310.02620.11830.21240.27450.22760.10870.02780.005

Q: In your two sets of Statistics tests, find the mean of the number of tests that will be passed. 1.…

A: Given: The provided dataset is given as: Number of passed test (x) Probability P(x) 0 0.25 1…

Q: Proctor & Gamble reported that an American family of four washes an average of 1 ton (2000…

A: Introduction:Here, the suggested population mean, μ = 2,000 pounds.The population standard…

Q: ominic would want to estimate the mean of a population which is normally distributed. The standard…

A:

Q: The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation…

A: GivenMean(μ)=76standard deviation(σ)=6

Q: The average final exam score for the statistics course is 77% and the standard deviation is 8%. A…

A: The average final exam score for the statistics course is 77% and the standard deviation is 8%. From…

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: We have given that.  Mean = 270 , Standard deviation = 15 , We need , Part (a): p(x greater than…

Q: The sizes of houses in Kenton County are normally distributed with a mean of 1369 square feet with a…

A: From the given information, the mean and standard deviation are 1,369 and 171.

Q: If the standard error,  of a sample data set is 5 and the standard deviation,  of the distribution…

A: For a population with mean µ  and standard deviation σ, the standard error is σx̅ = σ/√n, where x̅…

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.