The diameter of a brand of ping-pong balls is aproximately normally distributed, with a mean of 1.30 inches and a standard deviation of .04 inch. If you select a random sample of 16 ping-pong balls what is the sampling distribution of the mean?

Q: Two out of 8 students at a local college say that they skip dinner in the evening. Find the mean,…

A: Given that  Success of probability p =2/8=0.25 Number of trials n=20 X~binomial (n,p)

Q: Joan’s finishing time for the Bolder Boulder 10K race was 1.76 standard deviations faster than the…

A: Given   x=μ+1.76 σ   ∴z=1.76 ∵1.76 SD  above mean       n=420 women

Q: A sample is collected from the items produced by a company. The sample size is 49. The standard…

A: Answer: From the given data, Population standard deviation (σ) = 0.32 Sample size (n) = 49

Q: If a sample has a mean of 150 and a standard deviation of 9, what is the value in the data set that…

A: Given,mean(μ)=150standard deviation(σ)=9Z-score=1.58

Q: In a normal distribution, what does the variance measure?

A: The normal distribution is a symmetric distribution that has a bell-shaped curve.

Q: Joan’s finishing time for the bolder boulder 10k race was 1.85 standard deviations faster than the…

A:

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: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

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: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: The population has a mean of 14 and a standard deviation of 3. The sample size of your sampling…

A:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Let X be the length of the steel rods. Then X~N (144.3,0.8) i.e. µ=144.3 and σ=0.8

Q: Assume that women have heights that are normally distributed with a mean of 63.6 inches and a…

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Q: Hogie lizards have tail lengths that are normally distributed with a mean of 22.5 cm and a standard…

A:

Q: What proportion of skiers will finish the race in exactly one minute?

A: The tume it takes for downhill skiers to finish a race follows a Normal distribution with a mean of…

Q: The lengths of individual fish in a pond have a non-Normal distribution with a mean of 18.6 cm and a…

A:

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A:

Q: A school has a population of 8000 students with a mean height of 153 cm with a standard deviation of…

A:

Q: If you have a population standard deviation of 10 and a sample size of 4, what is your standard…

A: Given,population standard deviation(σ)=10sample size(n)=4

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: Physics students at a local university have designed a "hot dog gun" designed to shoot hot dogs into…

A: Let X: the distance it will shoot hot dogs. X is normally distributed.i.e. X~N(μ,σ2)where,…

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A:

Q: In an experiment the sorption was measured for a variety of hazardous organic chloroalkane solvents.…

A: Solution: x (x-x) (x-x)2 1.18 0.2362 0.05579 1.35 0.4062 0.164998 0.57 -0.3738 0.139726…

Q: Suppose you organized a​ 10-kilometer race in which the times were normally distributed with a mean…

A: Let X be any selected finishing time. Here, we have to find the percentage of runners took longer…

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: The MF exam has a population mean of 500 and a standard deviation of 200. What are the scores for…

A: Let X=MF exam scores We have given information, The population mean μ=500 And population standard…

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: Suppose that heights of women in Utah are normally distributed with a mean of 74 inches and a…

A:

Q: standard deviation 0.9 minute. What proportion of the time does Mrs. Starnes finish an easy Sudoku…

A: It is given that  Mean, μ = 5.3 Standard deviation, σ = 0.9

Q: Find the mean variance and standard deviation for the number of heads when 10 coins are tossed.

A: When a coin is tossed it can it can land either head or tail. Therefore, the number of outcomes is…

Q: The grades of a statistics midterm are normally distributed with a mean of 79 and a standard…

A: Normal distributionμ=79σ=3.5pgrade between74 and 80=?

Q: The amount that households pay service providers for access to the Internet varies quite a bit, but…

A: Explanation:a sample survey asks an SRS is 500 households Find the sampling distribution of x  In…

Q: A hiring manager rates a large pool of job applicants for eligibility for a job vacancy. The ratings…

A: Determine the value of rating score that separates the top 10% with the rest.   The value of…

Q: Suppose that the heights of 4-year old boys are normally distributed with a mean of 103cm and a…

A: Let X be the random variable from normal distribution with mean (μ) = 103 cm and standard deviation…

Q: Suppose the heights of women at a college are approximately Normally distributed with a mean of 65…

A: The objective of this question is to find the height that corresponds to the 40th percentile in a…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.35.…

A: Here, n = 145 and p = 0.35.