. A biologist is interested in studying the effect of vitamin supplements on deer mouse body length. Assume that the standard deviation is 8 mm. How many deer mice would be needer estimate the mean to within 2 mm with 95% confidence?

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

A:

Q: The Sum of Squared Errors for a data set of 18 numbers is 36. What is the standard deviation?

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Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A: The sample mean and the standard deviation are μ = 80 and σ = 12 respectively.Let X denotes the…

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: You have a dataset with a mean of 50 and a standard deviation of 5. What is the coefficient of…

A: From the provided information, Mean (x̄) = 50 Standard deviation (s) = 5

Q: What is the Z value for a value of X = 60?

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Q: A statistician uses Chebyshev's Theorem to estimate that at least 90 % of a population lies between…

A: We have to find correct answer for given data..

Q: A test score of 45 has an equivalent standard score (z-score) of 1.6. If the mean test score is 39,…

A: given dataraw score  x = 45standard score   z = 1.6mean μ = 39S.D.  σ = ?

Q: For a random sample of  70  overweight men, the mean of the number of pounds that they were…

A: given data  n = 70 x¯ = 28 poundsσ = 3.8 poundsbest point estimate for population mean  = ?

Q: A particular fruit’s weights are normally distributed, with a mean of 700 grams and a stand…

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Q: A population has mean 27 and standard deviation 12 . What is the data value that has a z-score of -2…

A: Given data, Mean=27 sd=12 z=-2 x=?

Q: Your instructor wishes to estimate the mean amount of time students spend studying math each…

A: Given that  Margin of error =E =2 Population standard deviation =12.7 95% confidence.

Q: The mean number of accidents a week at a company is 6.4 with a standard deviation of 1.5. What…

A: Let , X→N(μ=6.4 , σ=1.5) Here , we want to find the P(X<7)

Q: A bank loan officer rates applicants for credit. The ratings can be described by a normal model with…

A: Given: μ = ​200 σ = 50

Q: An mechanic wishes to determine the length of the typical battery cable. If he knows that the…

A: Given: Standard deviation =3.7 E=0.30 95% confidence interval =1.96 Determine the number of cables…

Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

A:

Q: With the extra data value,  the range, standard deviation, and variance is?

A: Given data: 3.31 2.79 2.83 1.97 1.69 2.54 2.46 3.44 3.93 1.59 2.86 1.61 2.57 4.02 2.49 2.42…

Q: A university dean wishes to estimate the average number of hours that freshmen study each week. The…

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Q: In a study of 400 people, the mean age is 50 years and the standard deviation of age is 10 years.…

A:

Q: A simple random sample of 36 observations was taken from a large population. The sample mean and the…

A:

Q: A quantitative data set has a size 50. At least how many observations lie within 3 standard…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics…

A:

Q: An elementary school teacher with 25 students plans to have each of them make a poster about two…

A: Given Information :  An elementary school teacher with 25 students plans to have each of them make a…

Q: A successful basketball player has a height of 6 feet 3 ​inches, or 191 cm. Based on statistics from…

A: Given,a basketball player has a height of 6 feet 3 inchesand the Z-score =2.31

Q: A successful basketball player has a height of 6 feet 4 ​inches, or 193 cm. Based on statistics from…

A:

Q: A study of commuting times reports the travel times to work of a random sample of 1068 employed…

A: Given data,  x = 54.0  s = 60.9 minutes n=1068 standard error of the mean=?