The mean of 100 values was found to be 40. It was later discovered that a value was misread as 83 instead of 53. Find out the correct mean. Select the correct response: 37.09 39.07 39.70 37.90 K Previous

Q: Consider a total of 1,000 people. If it was said that within 1 deviation (of the mean) of all people…

A: Using empirical rule, 68% of the data lies within one standard deviation , 95% of the data lies…

Q: The mean IQ score for 1900 students is 105, with a standard deviation of 15. Assuming the scores…

A: Follow the procedure given below.

Q: 12. Chris wants to know the changes in the heights of all his friends by comparing their previous…

A: Given: Previous Now 100 104 125 130 90 110 77 96 85 112

Q: Use the sample statistics to test the claim that the mean score on a final exam is more than 83. x =…

A: STAT --> TESTS ---> T-test --> stats

Q: For the number of heads when 20 coins are tossed, find the following. Round your answers to three…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: n = 11 Ex=55 Ex²=2230 Give the value of the sample standard deviation.

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Q: The P-value for a one-sided test for a mean is 0.06. The P-value for the corresponding two-sided…

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Q: If you wanted to know who was smarter “for his age" Nico, a 6 year old, or Sam a 74 year old, you…

A: Given Nico was 6 year old and Sam a 74 year old We wanted to know who was smarter for his age. For…

Q: In an application to estimate the mean number of miles that downtown employees commute to work round…

A: We have given that  n = 20sample mean, Xbar = 4.33s = 3.50

Q: Find the mena deviation about the (a) median (b) mean in respect of the following numbers :…

A: Arrange the numbers in ascending order: 26,29,39,46,56,65,72,79,85,99 First we find median and mean…

Q: Q2: b) For a mean of 70 and a standard deviation of 8, find standardized score for a value of 80.…

A: Givenmean(μ)=70standard deviation(σ)=8x=80

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

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Q: According to the Chebyshev's rule, the proportion of observations within 2.5 standard deviations of…

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Q: Which of the following z scores are above the mean? Choose all that apply.     0     1.35…

A: For normal distribution, the mean is equal to 0

Q: Find the estimated standard error for the sample mean

A: Here  n = 14 and SS= 4238.

Q: In a sample survey taken of 450 residents of a given community, 180 of them indicated that they shop…

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Q: mean = 5835 and s = 520 he cost of a one-carat VS2 clarity, H color diamond from Diamond Source USA…

A: Given: The sample mean price of diamonds is x¯=$5835. The standard deviation is s=$520. The sample…

Q: A researcher surveyed 220 residents of a city about the number of hours they spend watching news on…

A: Given: n = 220 X = 1.8 S = 0.35 Confidence level = 95% Formula Used: Margin of error M = Zα/2Sn

Q: If you want to be 95% confident of estimating the population mean to within a sampling error of ±5…

A: formula for the sample size :

Q: If you have a 99% confidence that a population proportion is in the interval from a to b, what does…

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Q: For a group containing 100 observations, the arithmetic mean and standard deviation are 8 and 10.5.…

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Q: If you have a ND with mean 100 and standeard deviation 10. Find P(80<X<120)=

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Q: When estimating the mean age of a population of 5000 individuals, a simple random sample of 50…

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Q: If a sample is drawn from a population, what happens to the standard error of the mean if the sample…

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Q: The number of regular season wins for 10 college football teams in a given season are given below:…

A: x x2 2 4 10 100 15 225 5 25 13 169 10 100 15 225 9 81 7 49 4 16     ∑x=90…

Q: Given the mean is 100, the standard deviation is 20, and 12 people took the test, which person…

A: We have given that Sample size=n=12 Mean=mu=100  Standard deviation=sigma=20

Q: The mean number of travel days per year for salespeople employed by three hardware distributors…

A: Sample size: Sample is the part of the population that will help us to draw the inference about the…

Q: Suppose the test scores of 600 students are normally distributed with a mean of 76 and standard…

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Q: ith a mean of 110 and standard dev. of 15, find the 3 unique deviations to the left and right of the…

A: Deviations to the left   i) One standard deviation away from mean x = u - s x = 110 - 15 = 95   ii)…

Q: Suppose a researcher is trying to understand whether people who purchase fast-food hamburgers would…

A: Null and alternate hypotheses: The investigator is interested to test whether the population mean is…

Q: Below are the ages of every resident of a very small assisted living facility. Find the standard…

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Q: Use the information below to determine how many standard deviations from the mean will the following…

A: Given : μ=36.4032n=129σ=64.3382x¯=12.5719

Q: Find the mean and standard deviation for the individualized instruction scores. Scores…

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Q: with M = 85 and s = 12 is transformed into z-scores. After the transformation, what are the values…

A: According to the sum, A sample with M = 85 and s = 12 is transformed into z-scores. M=sample mean=85…

Q: The following grades, Table 1(g), were given for a student assignment, compute the mean, x, the mode…

A: Introduction: When observed data are not in grouped format, they are referred to as ungrouped data.…

Q: 4. Suppose an interval estimate for the mean was (62.84, 69.46). The population standard deviation…

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Q: Assume that the readings on the thermometers are normally idstributed with a mean of 0" and a…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: (d) If the mean score was u = 157 with standard deviation o = 19, what was the final exam score for…

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Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A: Margin of error(E)=1 day Population standard deviation(σ)=2.8 days at confidence level 95%,…

Q: Which of the following samples would have the largest standard error of the mean

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Q: 1. A biologist claims that the mean cholesterol content of chicken eggs can be reduced by giving a…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 280280 Sample Standard Deviation (s)(s) =…

Q: Suppose an interval estimate for the population mean was 62.84 to 69.46. The population standard…

A: Given : Interval estimate for the population mean was 62.84 to 69.46 Population standard deviation…

Q: a. What is the difference between the weight of 5.47 lb and the mean of the weights? b. How many…

A: Given :   X-bar=1.819  , s=1.401 , highest weight=5.47 We want to answer the following :  a) What is…

Q: The following data gives the number of books taken in a school library in 7 days find the standard…

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Q: The mean and S.D. of 20 items were found to be 12 and 6 respectively. On checking it was discovered…

A: Given:   Total number of observations, N=20              Mean, μ=12             Standard deviation,…

Q: The weekly mean sale of a certain store is 3,884 pesos. When the measurements are reviewed it was…

A: Given : x¯ = 3884 ∑x = 3884×7 ∑x = 27188 Now after correction, ∑x = 27188 - 2321 + 3221 ∑x = 28088

Q: A labor rights group wants to determine the mean salary of app-based drivers. If she knows that the…

A: Given that  Standard deviation =3.3 Margin of error =0.77 We have to find How many number of drivers…

Q: For the following data in the sample:     0,    6,    8,    6,    5 Find the mean and the standard…

A: The data is given as 0, 6, 8, 6, 5.

Q: Sixteen percent of the world's population is left-handed. A researcher claims that left-handed…

A: a) mean (p) = 0.16 , q = 1 - 0.16 = 0.84 , n =2100

Q: Who is taller with respect to their own gender? (Men have a mean height of 70.4" with SD 3.0" and…

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