Assume you have a normal distribution. What is the probability of obtaining a z less than the following?:             +1.645 +2.322 -0.620 -7.091 -0.950

Q: What is the probability of randomly selecting an income greaterthanX= $75,000 per year in a set of…

A:

Q: What is the two-tailed probability, or p-value for the following T score? t = 4.32 df = 8 .005 > p >…

A: We have given that,  degree of freedom (df) = 8 and t- score = 4.32 Then,  We will find two- tailed…

Q: Can the following table be a probability distribution? P(z) 0.3142 0.2085 3 0.122 4 0.3196 0.0995 O…

A: Probability distribution table is given.

Q: Find the probability using the normal distribution: P(-2.07<z<1.66). Use The Standard Normal…

A: The probability is,

Q: Calculate the variance of the following probability distribution: 1 2 f(x) 0.14 0.18 0.25 0.21 0.22…

A: Given, a probability distribution Then ,    mean = Ex = ∑x=04x fx   Variance= Ex2 - Ex2where    Ex2…

Q: For the standard normal variable Z, find the probability P(Z>2.86)P(Z>2.86) : P(Z>2.86)=

A: Given data for the standard normal variable Z  find the probability p(z&gt;2.86)=?

Q: The probability that a sample will have a z-score greater than is 0.35%. Z 0.0 0.01 0.02 0.03…

A: We have given that the probability is 0.35% = 0.0035.

Q: Let x be the number of errors that appear on a randomly selected page of a book. The following table…

A: X p(X) X*p(X) X2*p(X) 0 0.73 0 0 1 0.16 0.16 0.16 2 0.06 0.12 0.24 3 0.04 0.12 0.36 4 0.01…

Q: from the probability distribution, find the mean and standard deviation for the random variable,…

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Q: Based on historical data kept by an airline, the probability distribution for passengers getting…

A: Solution: Let X be the number of individuals bumped off the flight. The given probability…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.38​%. A random sample of 32 of…

A: The probability of the mean childhood asthma prevalence for the sample is greater than 2.7​% is…

Q: Pharmacists at a research institution claim that a certain medicine is 74% effective on people with…

A: The mean is, The standard deviation is, The probability that would be effective in at most 56 of…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.33​%. A random sample of 30 of…

A: Let "M" be the mean childhood asthma prevalence. Where,

Q: The discrete random variable X has the following probability distribution (See image below). Solve…

A: Given PMF of X. Now will using this pmf to find mean.x = [15,20,25,30]p(x) = [0.20,.15,.32,0.33]

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.36%. A random sample of 34 of…

A: Given thatMean,       μ=2.36% ,   sample size, n=34standard deviation,  σ=1.34%,     x=2.7%

Q: ind the probability using the normal distribution:  P (z>2.33

A: standard normal distribution Z~N(0,1) P(z&gt;2.33) = ?

Q: The table below shows the probability distribution for X, the number of daily coffee breaks taken…

A: Solution-:Let, X=the number of daily coffee breaks taken per day by coffee drinkers.…

Q: An elevator has a placard stating that the maximum capacity is 1550 lb-10 passengers. So, 10 adult…

A: maximum capacity of elevator  = 1550 lb - 10 passangermen : normal distributionμ = 163 lbσ = 33…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.22​%. A random sample of 30 of…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: P(x) 0.004 1 0.013 2 0.028 0.353 4 0.227 0.217 0.158 a.) Find the probability of exactly 5…

A:

Q: tandard normal variable Z, find the probability P(Z>−0.34)P(Z>-0.34) : P(Z>−0.34)=P(Z>-0.34)=

A: given data,stanadard normal curve X~N(0,1)μ=0σ=1we have  to find out the given probability

Q: Choose the correct histogram below. OA. P(x) 0.5 0.4- 0.3 0.24 0.1- 0- C. P(x) 0.5- 0.4- 0.3- 0.24…

A: It is given that the Binomial distribution is P(X) = 6Cx*(0.2)x(0.8)6-x

Q: The average number of miles (in thousands) that a car's tire will function before needing…

A: Given, Population mean is 64 Standard deviation is 15 sample size = 6

Q: Find each the following probabilities for a normal distribution a. p(–0.80 < z < 0.80) b. p(–0.50…

A:

Q: ACT composite scores are normally distributed with µ=21.0 and σ=5.4. A sample of nine students is…

A: Denote X as the ACT composite scores. It is given that X is normally distributed, with mean μ = 21…

Q: The mean height of women in a country​ (ages 20−​29) is 64.3 inches. A random sample of 75 women in…

A: From the provided information, Mean (µ) = 64.3 Standard deviation (σ) = 2.88 Let X be a random…

Q: Let the random variable Z have a standard normal distribution. Find each of the following…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: D. pl-H.20 <26-0.80

A:

Q: Consider the following probability distribution: P(X) 1 0.1 3 0.2 0.3 What is the mean of the…

A:

Q: Suppose the proportion of one-child families in which the child is a boy is 0.488. For a random…

A: From the provided information, The proportion of one-child families in which the child is a boy is…

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.08​%. A random sample of 32 of…

A:

Q: In the probability distribution to the right, the random variable X represents the number of hits a…

A: The random variable X represents the number of hits a baseball player obtained in a game over the…

Q: randomly selected to gather data in the hours spent per week edule of STATPRO. The table below shows…

A: Solution

Q: A normal distribution has a mean of u = 100 with a = 20. If one score is randomly selected from this…

A: