find the V av iance and St andard deviation

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: Given that the mean systolic blood pressure of women over age seventy is 131mmHg with a standard…

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: Given : Let X : Amount of weight that male college students gain during their freshman  X~N(μ=1.4 ,…

Q: The following data are the distances from the workplace (in  miles) for the 5 employees of a small…

A: The distances from the workplace (in miles) for the 5 employees of a small business are given as:…

Q: A bottled water distributor wants to d nationally known water bottling com standard deviation of the…

A: Solution

Q: find 1.mean 2.standerd deviation

A:

Q: a department store on average, has daily sailes of $29,395.82. the sandard deviation of sales is…

A: Given that, Mean, mu= 29395.82 And standard deviation, sigma= 2000 We know that, z score is given…

Q: For a group of 50 male workers,the mean and standarddeviation of heir monthly wages are Rs.630 and…

A:

Q: Can you find the standard deviation for sx and sy?

A:

Q: ble and highest possibel marks assuming normal distributiion .

A: P(X<5)=Pz<5-589=0

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: Given data: Mean =131 Standard deviation = 7

Q: The heights of American adult males are normally distributed with a mean of 177 cm and a standard…

A: We need to get the data by using formula P(mean-standardDeviation< x <  mean+standardDeviation…

Q: (a) Find the standard deviation of the combined data (b) Which of the two distributions is more…

A:

Q: Assume that the professor in a class assigns grades based on the following: A: Scores wich are 1.5…

A: The mean and standard deviation of the scores can be calculated as;

Q: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X>168)=?

Q: A distance is measured as 27.3 inches and 15.6 inches with the standard deviation (error) of 0.16…

A: Given information- We have given the mean and the standard deviation. E(X) = 27.3 inches E(Y) = 15.6…

Q: Calculate the standard deviation of the following dat-

A: Let , the table given below,  Age(xi) No. of persond dying(fi) fixi fixi2 10 15 150 1500 20…

Q: her wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will be…

A: given: mean(μ)=78 sd(σ)=8

Q: The heights cleared by two athletes in a high jump event are recorded bellowed. Athlete X: 1.86 m,…

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

Q: Assume that Z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(…

A: Given is a standard normal distribution where the cumulative distribution for all z between -b and b…

Q: display of data to find the standar

A: Given,

Q: Suppose that the mean cranial capacity for men is 1070 cc (cubic centimeters) and that the standard…

A: We need to complete the given statements assuming that men's cranial capacities are normally…

Q: If X~N(100, σ 2 ) and P(X < 106) = 0.8849, find the standard deviation, σ.

A: Here,X~N(μ,σ2)so,Here X~N(100,σ2)   → 1

Q: Find a 95% CI on the population standard deviation of speeds of drivers ticketed in a 55 mph zone…

A: Confidence interval population standard deviation :  A confidence interval is an statistical…

Q: Find the mean deviation about the A.M. of each of the following distributions : 2,4,6,8,10,12,14,16

A: Mean of the given data=Sum of all termsTotal Number of terms x=2+4+6+8+10+12+14+168=728=9

Q: Suppose that the mean systolic blood pressure for women over age seventy is 131 mmHg (millimeters of…

A: According to the given information, we have Mean = 131 and Standard deviation = 9

Q: Five of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A: Average and standard deviation are measures of central tendency and variance respectively.

Q: T'he mean and standard deviation of a set of 100 observations were worked out as 40 and 5…

A:

Q: d. Compute the first and third quartiles. e. Which measure, the mean or median, is a better measure…

A: The data can be sorted in ascending order as: 28, 29, 30,39, 41, 48, 48, 49, 51, 62

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a…

A:

Q: Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed…

A:

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 72.0 beats per…

A: Given that  The pulse rates are normally distributed. Mean = 72 beats per minute. standard deviation…

Q: Find and Stondard deviation X. mean of

A: Let , the probability density function of X is given below, = 0 ; otherwise Our aim is to find the…

Q: Assume that the distribution of a college entrance exam is normal with a mean of 500 and a standard…

A: Consider the equation

Q: Determine if the girls’ average score in an exam is higher than 600. The standard deviation of…

A: We have to conduct Z test for testing that if mean is more than 600. Since population standard…

Q: The results of a national survey showed that on average, adults sleep 6.9 hours per night.Suppose…

A:

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: Given Information: μ=20 and σ=3.2 (b) To estimate the percentage of showers that used more than 26.4…

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: Find the mean and standard deviation of the waiting time for counter A and B.

A: The values for counter A are- 18, 21, 22, 23, 23, 24, 24, 25, 25, 25, 26, 30, 32, 34, 50 The values…

Q: Suppose that the mean cranial capacity for men is 1170 cc (cubic centimeters) and that the standard…

A: (a) Given that, the value of mean is μ=1170 and standard deviation is σ=300 cc. Use the Empirical…

Q: de . Find the standard deviation of the observations 5, 11, 18, 25 and 41, using muill

A:

Q: The marks of six students in a science test are represented by the variable x. The following data…

A:

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

A:

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: The results of a national survey showed that on average, adults sleep 6.9 hours per night.Suppose…

A: (a) The mean of the samples hours that adults sleep is 6.9 hours and standard deviation is 1.2…

Q: Given Mean = 50, C.V. = 40%, Karl PearsonS Coefficient of Skewness = -0.4 Find standard deviation…

A: According to the given information, we have Mean = 50 Coefficient of variation, C.V. = 40% Karl…

Q: Suppose that the mean cranial capacity for men is 1040 cc (cubic centimeters) and that the standard…

A:

Q: Q2:The mean time taken by all participations to run a road race was found to be 200 minutes with a…

A: Chebyshev's theorem: At least 75% of the observations are lies between two standard deviations,…

Q: Assume that the distribution of scores on a college entrance exam is normal, with a mean of 500 and…

A: As per guideline expert have to answer first 3 subparts only.

Q: Suppose that the mean cranial capacity for men is 1020 cc (cubic centimeters) and that the standard…

A: GivenMean(μ)=1020standard deviation(σ)=300By Using  68–95–99.7 rule:-68% data falls with in one…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.