Find the standard deviation, s, of sample data summarized in the frequency distribution table given below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 9.0 Σ(-2)]-[Σιτ η]. n(n-1) Interval 30-39 40-49 50-59 60-69 70-79 80-89 40 Frequency 23 24 8 Standard deviation =(Round to one decimal place as needed.)

Q: (i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an…

A:

Q: Heights for group of people are normally distributed with mean = 66 inches and standard deviation =…

A: Given that mu = 66 , s.d =3.9

Q: In a memory test, the test subjects are shown 625 objects and are asked after two hours to name the…

A:

Q: distribution of values is normal with a mean of 220 and a standard deviation of 8. Find the…

A: Solution: Let X be the random variable having normal distribution with mean of 220 and standard…

Q: Withdrawal symptoms may occur when a person using a painkiller suddenly stops using it. For a…

A: Given n=1100 P=0.01

Q: Find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of…

A: Sample size(n)=25mean()=$232Standard deviation()=$63

Q: %. The percentage of individual adult females with weights less than 83 kg is (Round to one decimal…

A: Assume that weights of adult females are normally distributed with a mean of 77 kg and a standard…

Q: The table lists means and standard deviations. The mean is the number before the plus/minus, and the…

A: Given,     Age Systolic Diastolic Men (n = 1200) Women (n = 1400) Normotensive 55 ± 10 55 ±…

Q: Find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of…

A: here original population is normally distributed. therefore sampling distribution of sample mean…

Q: 1 The number of workers employed, the mean wage (in Rs.) per month and standard deviation (in Rs.)…

A:

Q: What is the Discrete Variable Standard Deviation for the following numbers: x = 0 and P(X = x) =…

A: Answer:- Given the discrete variable is, x = 0 and P(X = x) = 0.56x = 1 and P(X = x) = 0.15x = 2 and…

Q: The weight of each baby born in a given week in provided in this table below. The mean weight is…

A: Given information: The mean weight is 7.25 pounds and the standard deviation is 1.03 pounds.

Q: A hospital in a large city records the weight of every infant born at the hospital. The distribution…

A: Since posted multiple questions,  answering only first three sub parts, please repost the remaining.…

Q: A distribution of values is normal with a mean of 90 and a standard deviation of 5. Find the…

A: The provided information is  µ=90 σ=5 P(-a<X<a)=0.02…

Q: Suppose a randomly selected sample of n = 36 men has a mean foot length of x = 27.5 cm, and the…

A: Given data: Sample size = 36 Mean = 27.5 cm Sample standard deviation = 2 cm

Q: Heights for group of people are normally distributed with mean = 69 inches and standard deviation =…

A:

Q: Noise Levels in Hospitals In a hospital study, it was found that the standard deviation of the sound…

A:

Q: The test scores of communication engineering class with 900 students are distributed normally as in…

A: If a random variable, X~N(μ,σ2), the z-score is Z=X-μσ; Z~N(0,1)whereμ=population meanσ=population…

Q: Please answer number 9. All steps!! Make sure to show work!! Answer quickly!

A: 9.Each of the given data sets has

Q: answers to four decimal places.) (a) Between 63 inches and 67 inches. P =  (b) Between 61 inches…

A: As per bartleby guidelines we can solve only first three subparts and rest can be reposted

Q: Use the central limit theorem to find the mean and standard error of the mean of the indicated…

A: The mean of the sampling distribution is, μx¯=μ=101 Thus, the mean of the sampling distribution is…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Given data, Aptitude score Frequency 0 2 1 3 2 2 3 2 4 3 5 4

Q: Heights for group of people are normally distributed with mean = 66 inches and standard deviation =…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from…

A: Given Information: The hypothesized mean value μ0=54.7 Sample size n=25 Sample mean x¯=56.8 Sample…

Q: The distance advanced in a day by a tunnel boring machine, in meters, is uniformly distributed on…

A: From the provided information,The distance advanced in a day by a tunnel boring machine, in meters,…

Q: ompute the mean and standard deviation for these data:              50             10…

A: We need to a) Compute the mean and standard deviation for these data:              50             10…

Q: For each set of data, use the calculator to find the mean (xbar) and standard deviation (sx) 1o14…

A:

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 39 beats…

A: Hello there! there are more than 3 subparts in the question. According to our policies cannot answer…

Q: Withdrawal symptoms may occur when a person using a painkiller suddenly stops using it. For a…

A: Givenpopulation proportion(p)=2%=0.02sample size(n)=1600

Q: (c) Table 1 shows the daily income of fruit sellers. 100 120 120 110 200 180 170 160 145 120 Table 1…

A:

Q: The brain volumes ​(cm3​) of 50 brains vary from a low of 908 cm3 to a high of 1478 cm3. Use the…

A: Given: Min=908 Cm3Max=1478 Cm3Exact standard deviation =174.4

Q: The number (in thousands) of new houses sold each month in a country over a four year period is…

A: The question is about grouped freq. dist. Given :

Q: Noise Levels in Hospitals In a hospital study, it was found that the standard deviation of the sound…

A: From the given information we conduct F test for equality of two standard deviation.