If [330, 610] is a confidence interval for the population mean. Find the margin of eror. Select one: a. 140 O b. 130 O c. 120 O d. 110

Q: Assume that adults have IQ scores that are normally distributed with a mean of 104.7 and a standard…

A:

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

A:

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: the data set has size 50. Approximately how many observations lie within three standard deviation to…

A: Empirical rule (68-95-99.7 rule): Approximately 68% of data lies within the first standard…

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: Given that  Mean = 0 , Standard deviation = 1

Q: A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation…

A: From the provided information, Mean (µ) = 60 Standard deviation (σ) = 14

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.2 and a standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.4 and a standard…

A: We have to find first quartile. First quartile (Q1) is the values such that 25% data fall below that…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.6 and a standard…

A: Let 'X' be the random variable representing IQ scores. According to the given information,…

Q: The sample mean is x = Udla Set. Use 70 as the midpoint for "65 years and over." (Round to two…

A: Given: The pie chart of the age distribution.

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

A:

Q: 2. construct a 95% confidence interval for the population mean. Assume the population has a normal…

A: given data sample size (n) = 20sample mean ( x¯ ) = 3120sample standard deviation (s) =67795% ci for…

Q: Assume that adults have IQ scores that are normally distributed w 21.6. Find the first quartile Q,,…

A: Given: mean=μ=95.1 standard deviation=σ=21.6

Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.5 and a standard…

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: Of the following general derivations, choose the formula that you need for computing a confidence…

A: Confidence interval = ??

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.7 and a standard…

A:

Q: The first quartile is. (Type an integer or decimal rounded to one decimal place as needed.)

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.2 and a standard…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 97.7and a standard…

A: Given that  IQ scores that are normally distributed Mean (μ) = 97.7  Standard deviation (σ) = 19.7…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.4 and a standard…

A: Given,Mean, μ = 96.4Standard deviation, σ = 18Using formula,

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.8and a standard…

A: Let X denotes the adults IQ scores which follows normal distribution with mean 101.8 and standard…

Q: The head librarian at the Library of Congress has asked her assistant for an interval estimate of…

A: The given confidence interval estimate is from 740 to 920 books per​ day, and the population…

Q: Claim: The mean pulse rate (in beats per minute) of adults males is equal to 69 bpm. For a random…

A: From the provided information, Sample size (n) = 130 Sample mean (x̄) = 69.3 Sample standard…

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: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.1 and a standard…

A: Given,Mean (μ) = 100.1and standard deviation (σ) = 22.2

Q: A test has a mean score of 55 with a standard deviation of 12. Using the Empirical Rule determine…

A:

Q: The first quartile is

A: here use standard normal distribution table for z score for 0.25

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.1 and a standard…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.3 and a standard…

A: Given :  IQ scores that are normally distributed with a mean of 96.3 and a standard deviation 17.…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 97.4 and a standard…

A: Let "X" be the IQ scores of adults. Find z-value: Refer Standard normal table/Z-table, Lookup for…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: