What are the mean and standard deviation of the normal distribution curve pictured below? It was labeled using the Empirical A μ=80 and o=20 u=20 and o=80 20 μ=20 and o=140 40 60 80 100 120 140

Q: et X, has a normal distribution with a mean of 100 and a standard deviation of 4. the z value for X…

A: Given,μ=100σ=4x=80z=?

Q: Express the k th percentile, Pk , of a normally distributed variable in terms of its mean, μ, and…

A: The kth percentile represents the area of k to the left of z. Here, the kth percentile is calculated…

Q: find z such that 99.31% of the  normal curve lies to the left of z and sketch it

A: Obtain the value of z such that 99.31% of the normal curve lies to the left of z. The value of z…

Q: Assume the differences between before and after measurements follow a normal distribution. Let μ1…

A:

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: 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: Which distribution is used when doing the classical approach to test the population standard…

A: The t distribution is used for testing the mean.

Q: Use the normal distribution below for the prices of a high end HD television to answer the question.…

A: as we know empirical rule:  approximately 68 -95 -99.7% data fall within 1σ-2σ-3σ of μ.

Q: For any normal distribution, about 68 % of the data lie within one standard deviation of the mean.…

A: The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical…

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

A:

Q: Assume that a normal distribution of data has a mean of 12 and a standard deviation of 2. Use the…

A: We have given thatMean(µ) = 112Standard deviations (σ) = 2X ~ N (µ, σ )= N(201, 22)

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: The time to complete an exam is approximately Normal with a mean of 48 minutes and a standard…

A:

Q: Before we test any modules, let’s understand the distribution of defects. Simulate at least 2,000…

A: From the given information, the defective rates are roughly triangular, with a lower bound of 0%=0…

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: Find the indicated z score. The graph depicts the standard normal distribution of bone density…

A: We have to find correct answer for given question..

Q: Match each of the normal curves to its mean and standard deviation o. a. μ = -2, o = 2 c. μ = 4,o=1…

A: Normal distribution:The normal distribution is a continuous probability distribution that is…

Q: In a normal distribution, a data value located 1.3 standard deviations below the mean has Standard…

A: A Z-score gives the value which tells that how many standard deviations the data point is far from…

Q: Which of the following tables is used in calculating the estimate assuming it follows a normal…

A: c. Z table   The standard normal distribution table provides the probability that a normally…

Q: rd normal dist

A: Z score is used as a score used to measure by how many units the value of a raw score is above or…

Q: Consider the following frequency table. Value Frequency 1.50 1 2.00 8 2.50 7 3.00 4 Calculate the…

A: The standard deviation is 0.42 when rounded to 2 decimal places.Explanation:To calculate the…

Q: In a test of Ho: µ = 30 against Ha: µ> 30, the sample data yielded the test statistic z = 1.85. Find…

A: Given : Population mean = 30 z - value = 1.85

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: Which of the following correctly describes the relationship between the standard normal and the t…

A: We have to determine which statement is true for given situation.

Q: The mean 1Q score of adults is 90, with a standard deviation of 10. Use the Empirical Rule to find…

A: Given data: Mean =  90 Standard deviation = 10 To find: By using the Empirical Rule to find the…

Q: Given a normal distribution with μ=30 and σ=6​, find​ (e) the two values of x that contain the…

A: It is given that the mean is 30 and the standard deviation is 6.

Q: ind the indicated z score. The graph dipicts the standard normal distribution of bone density scores…

A: The objective is to find the z score using the given graph.

Q: In a normal distribution, a data value located 1.4 standard deviations be the mean has Standard…

A: In a normal distribution, a data value located 1.4 standard deviations below the mean has Standard…

Q: A normal distribution of scores has a standard deviation of 10. Find the z-score fir the following…

A: Here the given information is A normal distribution of scores has a standard deviation of 10 i.e ,…