Questions from Statistics

Q: Draw two normal curves that have different means but the same standard

Draw two normal curves that have different means but the same standard deviation. Describe the similarities and differences.

Q: For two values c and d, where a ≤ c ≤

For two values c and d, where a ≤ c ≤ d ≤ b, the probability that x lies between c and d is equal to the area under the curve between c and...

Q: What is the mean of the standard normal distribution? What is

What is the mean of the standard normal distribution? What is the standard deviation of the standard normal distribution?

Q: Describe how you can transform a nonstandard normal distribution to the standard

Describe how you can transform a nonstandard normal distribution to the standard normal distribution.

Q: Why is it correct to say “a” normal distribution and

Why is it correct to say “a” normal distribution and “the” standard normal distribution?

Q: The random variable x is normally distributed with mean µ = 174

The random variable x is normally distributed with mean µ = 174 and standard deviation σ = 20. Find the indicated probability. P(x < 170)

Q: Find the indicated probabilities. If convenient, use technology to find

Find the indicated probabilities. If convenient, use technology to find the probabilities. In a recent year, the MCAT scores for the critical analysis and reasoning skills portion of the test were nor...

Q: Find the indicated probabilities. If convenient, use technology to find

Find the indicated probabilities. If convenient, use technology to find the probabilities. The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of...

Q: Write the binomial probability in words. Then, use a continuity

Write the binomial probability in words. Then, use a continuity correction to convert the binomial probability to a normal distribution probability. P(x = 45)

Q: Find the indicated probabilities. If convenient, use technology to find

Find the indicated probabilities. If convenient, use technology to find the probabilities. The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 20 mi...