Given a normal distribution with mean 40 and standard deviation 5, the value of x that has a 3396 of the area to the left is O a. 27.8 O b. 42.2 C. 28.8 O d. 37.8

Q: For a normal distribution with a mean of 2 and a standard deviation of 0.5, what is p(1.7 < X <…

A: From the provided information, Mean (µ) = 2 Standard deviation (σ) = 0.5 X ~N (2, 0.5)

Q: A normal distribution has a mean of p=40 with a 10. a vertical line is drawn through the…

A:

Q: A given data set is normally distributed and has a mean of 50 and a standard deviation of 10. What…

A:

Q: 5. Find the area under the standard normal distribution curve. A. z=0 and z=2.23 B. To the right of…

A: X~N( 0 , 1 )μ=0  , ?=1 (for standard normal distribution)Z-score =( x - μ )/?

Q: What are the mean and standard deviation of the normal distribution curve pictured below? It was…

A: From this graph we have to find mean and standard deviation.

Q: Suppose the scores on an exam are normally distributed with a mean μ = 75 points and standard…

A: given data, normal distribution μ=75σ=8 exam score for an exam whose z-score is 1.25=?

Q: Suppose x has a normal distribution with mean 50 and standard deviation 6.   a. What percent of the…

A: (a)   Obtain the percent of the x values lie between values 44 and 50. The percent of the x values…

Q: A group of Internet stocks has a mean cost per share of M=$46 with standard deviation of s=$10.…

A: Empirical rule: The probability of the observation lies within 1 standard deviation of the mean,…

Q: For a Normal distribution with μ=11.9μ=11.9 and σ=2.9σ=2.9. What proportion of observations have…

A: Obtain the standard z-score for the random variable equals 7. The standard z-score for the random…

Q: about the normal distribution:    Select what applies.   1. the mean corresponds to the z score…

A: we have to find correct statement for each question

Q: - Given a normal distribution with a μ = 40 and o u 4.6 find the z-score that corresponds to each x…

A: Given dataμ=40σ=4.6

Q: Let X has a normal distribution with a mean of 120 and a standard deviation of 20. The z value…

A:

Q: For a normal distribution with a mean of μ = 10 and a standard deviation of σ = 2, what is p(5<X<15)

A: It is given that X follows N(mean = 10, SD = 2), then Z = (X - mean)/SD follows N(0,1)

Q: Refer to the following normal curve, with mean µ and standard deviation o. The mean μ = 30 95% of…

A:

Q: Suppose X has a normal distribution with mean 125 and standard deviation 15.  Which of the following…

A: Mean=M=125, Standard deviation=S=15

Q: For a normal distribution with a mean of µ = 80 and a standard deviation of σ = 10, what is p(X<95)?…

A:

Q: a normal distribution with mean u = 58 and standard deviation o = 4.2 %3D

A: Given that  A graph of normal distribution with  Mean (μ) = 58 Standard deviation (σ)= 4.2   We know…

Q: A vertical line is drawn through a normal distribution at z = 0.80. What proportion of the…

A:

Q: For a normal distribution with a mean of μ = 90 and a standard deviation of σ = 5, what is p(X>87)?…

A: We have given the following information about the normal distribution Mean = 90 Standard deviation…

Q: What proportion of observations have values less than 7? Round to fourth decimal

A: From the provided information,    Mean of normal distribution µ=11.9 And standard deviation is σ=2.9…

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: Obtain the 7th percentile of the distribution.   The 7thpercentile of the distribution is obtained…

Q: For the standard normal curve, find the z-score that corresponds to the 90" percentile. Click to…

A:

Q: For a normal distribution a mean of 60 and a standard deviation of 10, find the proportion of the…

A: It is given that the mean is 60 and the standard deviation is 10.

Q: Suppose test scores have a normal distribution with mean 80 and standard deviation 5. What…

A: We have given that the random variable X i.e. test scores id normally distributed with mean 80 and…

Q: Suppose X is normally distributed with a mean of 71 and a standard deviation of 30. a. If the area…

A: given data normal distributionμ = 71σ = 30area under normal curve represents probability

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.