The table below shows the probability distribution of the random variable X. a. Find the mean of the random variable. b. Obtain the standard deviation o of the random variable. + 1 2 3 P(X =x) 0.4 0.1 0.5 a. Find the mean of the random variable. | (Round to two decimal places as needed.) b. Obtain the standard deviation o of the random variable. (Round to two decimal places as needed.)

Assume that the probability of a being born with Genetic Condition B is p=110. A study looks at a random sample of 1037 volunteers.Find the most likely number of the 1037 volunteers to have Genetic Condition B.(Round answer to one decimal place.)μ=Let X represent the number of volunteers (out of 1037) who have Genetic Condition B. Find the standard deviation for the probability distribution of X.(Round answer to two decimal places.)σ=Use the range rule of thumb to find the minimum usual value μ−2⋅σ and the maximum usual value μ+2⋅σ Enter answer as an interval using square-brackets only with whole numbers. Make sure the end points are usual values that are actually within the range of usual values.usual values =

Let X be the number of errors that appears when I randomly selected page of the a book. The following table is the probability distribution of X. Find a mean and standard deviation of X Round your answer to three decimal places if required 

Assume x is a normally distributed random variable with mean = 50 and variance = 3. Find the value of the random variable x0 when P(x ≤ x0) = .8413       A. 33  B. 49  C. 53  D. 16

Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 0 1 3 Probability 0.263 0.299 0.145 2 0.238 0.037 5 D 0.018 (a) Find the mean, variance, and standard deviation of the probability distribution. The mean is (Round to one decimal place as needed.)

= Assume that the probability of a being born with Genetic Condition B is p random sample of 174 volunteers. 29/30. A study looks at a Find the most likely number of the 174 volunteers to have Genetic Condition B. (Round answer to one decimal place.) μ Let X represent the number of volunteers (out of 174) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) 0 = Use the range rule of thumb to find the minimum usual value µ-2o and the maximum usual value μ+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values =

Assume that the probability of a being born with Genetic Condition B is p = 7/60. A study looks at a random sample of 826 volunteers. Find the most likely number of the 826 volunteers to have Genetic Condition B. (Round answer to one decimal place.) H = Let X represent the number of volunteers (out of 826) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two ecimal places.) 0 = Use the range rule of thumb to find the minimum usual value µ-20 and the maximum usual value μ+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values =

Assume that the probability of a being born with Genetic Condition B is p = 11/60. A study looks at a random sample of 1384 volunteers. Find the most likely number of the 1384 volunteers to have Genetic Condition B. (Round answer to one decimal place.) μ = Let X represent the number of volunteers (out of 1384) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) 0 = Use the range rule of thumb to find the minimum usual value µ-20 and the maximum usual value μ+20. Enter answer as an interval using square-brackets only with whole numbers. usual values=

About 3% of the population has a particular genetic mutation. 700 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 700. (If possible, round to 1 decimal place.)

Let X be the number of workouts a person does in a week. Suppose that X has the following probability distribution: 3 e d C # $ SB 4 C A. What is the expected number of workouts a person Standard deviation = r Expected value B. What is the standard deviation of the number of workouts a person f V You can use the tool below to help you compute standard deviation. % 5 t ca b 6 X 0 P p| 0.09 Oll y h hop & 7 n 1 2 3 0.14 0.43 | 0.25 O u does per Round to 2 decimal places, as needed. does per week? j Round to 2 decimal places, as needed. * 00 week? 8 4 0.09 3 k ( 9 O < alt O р ctrl [ ? + 11 = 1 < backs 1