(a) Find the mean of p, wherep is the proportion of left-handed individuals in a random sample of 1650. (b) Find the standard deviation of p. (c) Compute an approximation for P(p<0.14), which is the probability that there will be 14% or fewer left-handed people in a random sample of 1650. Round your answer to four decimal places.

Q: A psychologist finds that the intelligence quotients of a group of patients are normally…

A: Let "x" be the intelligence quotients (IQ) of a group of patients.

Q: Round each z-score to the nearest hundredth. A data set has a mean of x = 79 and a standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ = 100 and standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a…

A: Given information-We have given that adults have IQ scores that are normally distributed.μ= 105σ =…

Q: A data set has a mean of x = 217 and a standard deviation of 43. Find the z-score for each of the…

A: We know, in a Normal Distribution, z- score is given as, , where is the mean and  is the standard…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Obtain the Z-score for the random variable X equals 129. The Z-score for the random variable X…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

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

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Let "X" be the IQ score of adults.

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: Question 1 The probability that a tutor will see 0, 1, 2, 3, or 4 students 0 | 1 2 3| 4 1 5 4 P(x)…

A: For x=3, P(X)=1-427+127+59+527                          =227

Q: Write down the formulas for the standard deviation of x.

A: The formula for the sample standard deviation can be written as: Here, n is the sample size and x̅…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Given information Population mean µ = 100 Standard deviation σ = 20 We have to find the probability…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A:

Q: 90 85 75 76 81 76 75 76 76 96 89 88 73 81 93 76 76 96 89 88 73 81 89 74 74 74 76 86 75 96 79 73 86…

A: x x2 90 8100 85 7225 75 5625 76 5776 81 6561 76 5776 75 5625 76 5776 76 5776 96…

Q: standard deviation

A: If the random variable X follows a distribution with mean = μ and standard deviation = σ Then the Z…

Q: The IQ of highschool seniors is normally distributed with a mean of 100 and a standard deviation of…

A: The sample size is n=15. The population mean is μ=100. The population standard deviation is σ=15. We…

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 213  and a standard…

A: For a sample point x, the corresponding z-score is given by    z = (x - )/ Where,  = mean of the…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Given information Mean µ = 105 Standard Deviation σ = 15

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a…

A: Mean()=105standard deviation()=15

Q: In a population distribution, a score of X = 28 corresponds to z = −1.00 and a score of X = 34…

A: Where, For X=28 &amp; z=-1.00 For X=34 &amp; z=-0.50

Q: me Using Chebyshev's theorem, find the percentage of runners who ran this road race in 80 to 140…

A: Provided data is, mean time taken by participants to run a road race found to be 110 minutes with 15…

Q: Thirty percent of people did not visit their doctor's, offices last year. Let x be the number of…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ= 105 and a standard…

A: GIVEN DATA normal distributionμ = 105σ = 15P(x&lt;123) = ?

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 214  and a standard…

A: The mean is 214 and the standard deviation is 44.

Q: In a sample distribution, a score of x = 21 corresponds to z = -1.00 and a score of x = 12…

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: Assume that adults have IQ scores that are normally distributed with a mean of u 105 and a standard…

A: Given that, Mean = 105 and Standard deviation = 15

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.