An X random variable comes from any distribution with 21 averages and 17 variances. What is the probability that a sample of 45 randomly selected from this stack has a sample mean between 20 and 26? Calculate.

Q: Fifty five percent of the students in a class of 135 of planning to go to graduate school, Find…

A: Answer: From the given data, Fifty five percent of the students are planning to go to graduate…

Q: A racing car consumes a mean of 103103 gallons of gas per race with a variance of 3636. If 3838…

A:

Q: The probabilities that a patient will have 0,1,2, or 3 medical test performed on entering a hospital…

A: To find mean, variance and standard deviation.

Q: community has 1500 people with a mean age of 42 and a variance of 16. If you draw a random sample of…

A:

Q: A racing car consumes a mean of 107 gallons of gas per race with the variance of 49. If 46 racing…

A: The following information has been provided: The population mean is μ=107. The sample variance is…

Q: population has a mean of 350 and a standard deviation of 25, determine the probability that a random…

A: GIVEN DATA, μ=350σ=25n=40p(335<x¯<375)=?

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 touchdown passes (in football) is normally distributed with a mean…

A:

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: The net weight of a can of salmon is a random variable with a mean of 6.07 ounces and a standard…

A:

Q: If 50 and 70 are the two elements of a population data set and their z-scores are -2 and 3,…

A: For  X=50, Y=70  Z score= -2 and 3 for point X and Y

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 14, 16, 18,…

A: Given observation SAMPLE of scores is: 14, 16, 18, 13, 13, 19, 21, 11 n = 8

Q: A researcher has collected the following sample data: 3, 5, 12, 3, 2. The mean of the sample is 5.…

A:

Q: The mean height of 15-year-old boys is 175 cm and the variance is 64. For girls, the mean is 165 and…

A:

Q: What value is the probability that the mean of nine randomly selected individuals from a normally…

A: Sampling distribution of the sample mean x¯ ~ N(μx¯ , σx¯)

Q: About 78​% of all female heart transplant patients will survive for at least 3 years. Ninety…

A: From the given information, the sample size is 90 and the  proportion is 78%. The mean of the sample…

Q: A racing car consumes a mean of 104 gallons of gas per race with a variance of 9.   If 50 racing…

A:

Q: The mean and variance of defective items is 0.72 and 0.6876. Find the probability of getting 12…

A:

Q: A racing car consumes a mean of 103103 gallons of gas per race with a variance of 3636. If 3838…

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: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 15, 17, 19,…

A: Given data is 15, 17, 19, 22, 10, 23, 16, 15S.S=122.88

Q: A racing car consumes a mean of 101 gallons of gas per race with a variance of 49.   If 43 racing…

A: The probability that the sample mean would differ from the population mean by greater than 2.4…

Q: Fourty percent of the students in a class of 120 are planning to go to graduate school Find the…

A: Answer: From the given data, Sample size(n) = 120 Forty percent of the students planning to go to…

Q: find the probability that the mean time of a sample of 15 Americans who shower will be less than 12…

A:

Q: A racing car consumes a mean of 103 gallons of gas per race with a variance of 36. If 38 racing…

A: The probability of the sample mean would be greater than 101.5 gallons is 0.9382 and it is obtained…

Q: DESA Early Childhood researcher published that 5% of all births by university student’s result in…

A: From the provided information, DESA Early Childhood researcher published that 5% of all births by…

Q: Americans spend an average 12.2 minutes in the shower. If the standard deviation of the variable is…

A:

Q: Suppose a batch of metal shafts produced in a manufacturing company have a variance of 9 and a mean…

A: The standard normal variate is calculated using the sample mean, population mean, population…

Q: It's estimated that only about 5% of the population has hazel eyes. What is the probability that…

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Q: The following data show the probabilities for the number of cars sold in a given day at Alex's car…

A:

Q: from year s of teaching ,a statsitics profeessor knoes  that Amy , her student 's  test scre  will…

A: Introduction: Chebyshev's inequality says that at least 1-1/K2 of data from a sample must fall…

Q: A racing car consumes a mean of 103 gallons of gas per race with a variance of 36. If 38 racing…

A: Obtain the probability that the sample mean would differ from the population mean by more than 2…

Q: A random sample of 18 light bulbs is drawn from a normally distributed population. The population…

A: Since, the samples are drawn from the normal population thus sampling distribution of sample mean…

Q: If the sample variance for y1 = {-2, 7,9,13,16,0,15,6} is 44, what is the variance of y2 = 3.8 * y1?…

A: SOLUTION:- Given data for sample variance y1={-2, 7,9,13,16,0,15,6}=44…

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.