Ta)Suppose Z is the standard normal random variable. Use the standard normal distribution table to answer the following questions.“ P (Z<-1. 21)e P(Z > k) = 0. 12- (i). Find the 75th percentile of the standard normal distribution. (ii). Find the interquartile range of the standard normal distribution. Correct your answer to 2. decimal places.

Q: The average daily sales(X) of a branch are $500 and standard deviation is $51. Assuming the…

A: Answer: From the given data, The daily sales (X) are normally distributed with mean (μ) = $ 500…

Q: Find the value of t0.005 for a t-distribution with 28 degrees of freedom.

A:

Q: For a continuous variable with normal distribution where the mean is 22.5 and the standard deviation…

A: (1) Obtain the probability that X is less than 23. The probability that X is less than 23 is…

Q: The height X of giraffes is normally distributed with mean μ=16.7 feet and standard deviation σ=1.8…

A: According to the given information, we have Mean = 16.7 Standard deviation = 1.8 Sample size, n = 27

Q: Q. 64 Give the formula for finding the deciles of a continuous distribution.

A: Solution-: We want find what is formula for finding the deciles of a continuous distribution.

Q: Today, the waves are crashing onto the beach every 5.6 seconds. The times from when a person arrives…

A:

Q: The average THC content of marijuana sold on the street is 9%. Suppose the THC content is normally…

A:

Q: Scores on a standardized exam are known to follow a normal distribution with a standard deviation of…

A: The width of the given interval is,

Q: The time that it takes for the next train to come follows a Uniform distribution with f(x) =1/45…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: ne averagе тнс со distributed with standard deviation of 2%. Let X be the THC content for a randomly…

A: From the given information we find the probability.

Q: Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation…

A:

Q: Q5. Boiling point measurements for a liquid under fluctuating pressure conditions is normally…

A:

Q: For the probability distribution, find a. X b. P(y> 2) c. F(y= 6) d. P(y = 6) e. f(y = 4) f. f(y= 6)…

A: The probability distribution:

Q: assign numerical values to coin flips: Heads is +1 and Tails is –1, each with probability 1⁄2. After…

A: Given that

Q: The Law of Large Numbers (LLN) says O The distribution of the sample mean should approximate a…

A: It states that if you repeat an experiment independently a large number of times and average the…

Q: The average THC content of marijuana sold on the street is 9%. Suppose the THC content is normally…

A: Given Mean=9% Standard deviations=1%

Q: For a Uniform distribution with a low of 0 and a high of 25. Find the probability that a score is…

A: Solution: If X be the uniform random variable, then the probability density function of X is Let X…

Q: A normal distribution has mean u = 56 and standard deviation o = 20. Find and interpret the z-score…

A: X follows a Normal distribution with mean = 56 and S.D = 20 Then z=(x-mean)/SD = (x-56)/20…

Q: Solve this for me

A: The 68-95-99.7 rule states that :68% of the data falls within one standard deviation from the mean…

Q: Assume that X, the starting salary offer for anthropology majors, is normally distributed with a…

A: First, we need to calculate the Z-scores for the given salary amounts. The Z-score is a measure of…

Q: The length of human pregnancies from conception to birth vari ccording to a distribution that is…

A: Given that  Population mean =266 Population standard deviation =16 Sample size n =6

Q: this is part two. I got the answer wrong and i trying to figure out the answers before this test.…

A: (a) (iv)The null and the alternative hypotheses used for testing are given below:

Q: The average THC content of marijuana sold on the street is 10%. Suppose the THC content is normally…

A: (a)   Determine the distribution of X.   The distribution of X is determined below as follows:

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: A random variable is not normally distributed, but it is mound shaped. It has a mean of 18 and a…

A: given data population mean ( μ ) = 18population sd ( σ ) = 2sample size (n) = 13find mean of the…

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.