Refer to the following normal curve, with mean μ and standard deviation o. The standard deviation o= Select one: O a. 6 O b. 24 O c. 3 O d. 12 O e. none of these 16% of total area 44 56 16% of total area

Q: Find the following percentile and percentile ranks for a normal distribution with a mean of μ = 120…

A:

Q: Match the following parameters to their description (I

A: Population mean: μ Population standard deviation: σ Population units: N Sample mean: x¯ Sample…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.1…

A: Empirical rules:1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3)…

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: The figure below shows a frequency and relative-frequency distribution for the heights of female…

A: We know, The mean height of the students is 64.5 inches and the standard deviation is 1.8 inches.…

Q: A variable is normally distributed with mean 40 and standard deviation of 9.  Use the cumulative…

A:

Q: indicate whether the body is to the right or left of the score and find the proportion of the…

A: Given :  A normal distribution has a mean of μ = 30  standard deviation of σ = 12.

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

A:

Q: In a normal distribution, x = 5, z = -1.25. This tells you (right or left) of the mean. a. b. O A.…

A: Normal distributionx = 5z = -1.25 this tells that x = 55 is how  many standard on which side of…

Q: Create a 95% CI on the mean difference between the following before & after scores of systolic blood…

A: We have the data of before and after scores of systolic blood pressure of six subjects after doses…

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

A:

Q: For a normal distribution with a mean of µ = 500 and a standard deviation of σ = 50, what is…

A:

Q: the following information. 99 99 80 100 87 Develop a point estimate of the population standard…

A: It is given that the sample of 5 months of sales data. The data is 99 99 80 100 87

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: 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: 2. 4. 4. 3. 6.

A: x Frequency (f) f⋅x f⋅x2=(f⋅x)×(x) 2 2 4 8 3 4 12 36 4 3 12 48 5 1 5 25 6 0 0 0 Total…

Q: 8. Calculate SS, o², and o for the following population of N = 5 scores: 6, 0, 4, 2, 3.

A: N=5Population =6,0,4,2,3

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A:

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 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: The graph of a normal curve is given on the right. Use the graph to identify the values of μ and o.…

A: According to the given information, we have The normal curve is given. Distribution is normal.

Q: Given that Z is a standard normal variable, the value z for which P(Z ≤ z) = 0.2580 is: Select one:…

A:

Q: Let x have a normal distribution with a mean of 30 and a standard deviation of 7. The z value for x…

A: The formula of the Z-score is,Where, X denotes the raw data point,µ denotes the population mean,σ…

Q: Decide which of the following statements are True.  A.For any normal distribution, the mean,…

A: Normal distribution are symmetric about mean.

Q: The area under the standard normal curve between 1 and 2 standard deviations (both sides) in the…

A:

Q: A population data set has a normal distribution has a mean u = 28 and a standard deviation o = 4.2.…

A:

Q: For a sample of 300 mass values, the mean is 120 g and the standard deviation is 10 g. Assuming a…

A: From the provided information, Sample size (n) = 300 Sample mean (x̄) = 114 Standard deviation (s) =…

Q: 22. Seattle, Washington, averages µ = 34 inches of annual μ precipitation. Assuming that the…

A: Population mean, Population standard deviation,

Q: Suppose X has a normal distribution with mean 80 and standard deviation 5. What is the 90th…

A: Given that, Mean = 80 Standard deviation = 5

Q: The shape of a given population distribution is normal with a mean of u = 85 and a standard…

A: Answer: from the given data, Mean μ = 85 Standard deviation σ = 6.5 The distribution is normal