The following table gives the scores of 30 students in a mathematics examination: Scores 90-99 50-59 80-89 70-79 60-69 Students 8. 12 Find the mean and the standard deviation of the distribution of the given data. tandard deviation of the no years, noin to ensure that the chanc 4.

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 144 and a standard…

A: Given,   Mean = 144 Standard deviation = 27   The objective is find the percent of the population…

Q: The table below shows the total annual precipitation for San Diego, California. 2001 0 2001 2002…

A: Given: sample size(n)=10 Data: Year Precip(in) x 1994 9.4 1995 17 1996 7.3 1997 7 1998…

Q: A random sample of 6 people who went on a diet recorded their weight loss (in pounds) "xx" after 3…

A: Basics:   Mean x=ΣxnStandard deviation is given by:  S.d=Σx2-nx2n-1

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Q: A population has a bell-shaped distribution with a mean of 90 and a standard deviation of 8. Which…

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Q: Gracia, an ALS student, obtained a z-score of 1.35 in an achievement test that is normally…

A: Given : Z-score=1.35 Mean=85 Standard deviation =5

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A: As per Bartleby guideline expert have to answer first question three subparts only dear student…

Q: If the test scores in a class are normally distributed with a mean of 60 and a standard deviation of…

A: Given,Mean μ = 60Standard deviation σ = 4Using 1-2-3 rule 68% will fall within the 1 standard…

Q: Find the standard deviation and coefficient of variation from the following data: Marks No. of…

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Q: The following table gives the scores of 30 students in a mathematics examination. Scores     90–99…

A:

Q: Use the following information to answer the question. The mean age of lead actresses from the top…

A:

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: The following sample data represents the age of 30 lottery winners. 18 27 29 32 34 35 37 38 43 46…

A: a) The value of range is obtained below: From the given information, the minimum value of the data…

Q: 3. The data on relative humidity (in %) for the first ten days of the month in a city are given…

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Q: Suppose a population of individuals has a mean weight of 160 pounds, with a population standard…

A: Solution: Let X be the weight of individuals. From the given information, X follows normal…

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 266 days and a…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: The following data represents the age of 30 lottery winners. 24 28 29 29 30 31 33 34 34 35 36 37…

A: According to range rule thumb the standard deviation can be estimated as S = R/r, where R is the…

Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

A: Standard Deviation: It is a statistical measure that measures the dispersion of the dataset from the…

Q: The following table contains the probability distribution for the number of traffic accidents daily…

A: Obtain the value of the standard deviation. The value of the standard deviation is obtained below as…

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A: (a) Obtain the fraction of all students would have breathing rates in the interval from 9.7 to 14.3…

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A: Given: Sample size n = 5 Formula Used: Population standard deviation  σ = ∑i=1n(Xi-X)2n Where X is a…

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A: The image is attached below

Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

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Q: A sample of college students was asked how much they spent monthly on coffee. Approximate the…

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Q: this assignment, round all answers (when necessary) to exactly three decimal places. The numbers of…

A: From the given data we find the standard deviation.

Q: The following table gives the scores of 30 students in a mathematics examination. Scores     90–99…

A: We first write the table using the middle values of each group Scores Middle value (M) Number of…

Q: The table below shows the total annual precipitation for San Diego, California. Year 1994 1995 1996…

A: Given: 9.4 17 7.3 7 16.1 5.4 6.9 8.5 4.2 9.2

Q: Use the following information to answer the question. The mean age of lead actresses from the top…

A: Given that, μ=29.6 yearsσ= 6.35 years Let X denote the distribution of the actresses ages is…

Q: The following table presents the scores of students in Statistics examination Frequency 2. Scores…

A: Solution

Q: The following are that scores of 20 students who took a calculus exam. Find the mean and standard…

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Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

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Q: The following is a sample of sanitation scores for 20 cruise ships. 87 93 83 84 95 83 89 86 94 91 87…

A: Given data: 82, 83, 83, 83, 84, 85, 86, 86, 87, 87, 89, 91, 91, 93, 94, 94, 94, 95, 95, 97

Q: The fotlowing sample data represents the age of 30 lottery winners. 24 26 27 32 39 40 43 44 46 47 49…

A: the lowest value = 24 and the highest value = 84 so the range= R= 84 - 24= 60  So using the formula…

Q: 37. Find the standard deviation and coefficient of variation from the following data: Marks No. of…

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Q: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of…

A: Mean(µ) = 88Standard deviations (σ) = 10 X ~ N (µ, σ )= N(88, 10)

Q: Suppose that the score in Mathematics exam is normally distributed with a mean of 20 and a standard…

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Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

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Q: The following data are the marks for a sample of 5 students in Mathematics Exam. 19, 11, 12, 29, 18…

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Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 144 and a standard…

A:

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 267 days and a…

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Q: The time that a customer takes to complete a transaction in the business line at the bank follows a…

A: Given Data Population Mean,μ = 5.4 Population Standard Deviation,σ = 1.7

Q: The price-earnings (PE) ratios of a sample of stocks have a mean value of 12.75 and a standard…

A: Introduction: Since the distribution of the price-earnings or PE ratios is bell-shaped, it can be…

Q: Use the range rule of thumb to approximate the standard deviation. The following is a set of data…

A: From the provided information, The Maximum value of data set = 116.3 Minimum value of data set =…

Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

A: Given Sample size (n) =305

Q: In a certain population, let us assume that high school scores are normally distributed with mean of…

A: Obtain the 75th percentile.   The value of 75th percentile is obtained below as follows:

Q: Using the data below in Figure 1:   For which cases did you need to assume population standard…

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

Q: The mean weight of 1000 students at a certain high school is 140 pounds and the standard deviation…

A: Assuming that the weights are normally distributed.

Q: 2. The table below shows the recorded speeds of several cars on a busy street: Recorded Speeds (mph)…

A:

Q: In a certain population, let us assume that high school scores are normally distributed with mean of…

A: It's normal distribution with mean=74 And standard deviation=15