Question

Asked Apr 26, 2019

108 views

The random sample X is normally distributed with mean 50 and standard deviation 18. If n=324, compute the following probabilities:

- P(≥ 48) is:

Step 1

__Solution__

Let *X* be the random variable normally distributed with mean 50 and standard deviation 18.

Let *X*-bar be the sample mean and we have to find the probability that *P*(*X*-bar ≥ 48).

Since the sample size *n* = 324 is large, by Central Limit Theorem, the sample mean is approximately normally distributed with

Step 2

The required probability is ...

Tagged in

Q: Hi. How do you arrive at an answer using the TI-83? Thanks.

A: Solution:99% confidence interval for the slope of the regression line is calculated using EXCEL.The ...

Q: Find the probability of an event E if the odds for E is equal to the odds against

A: Odds of an event:The odds an event is given by the ratio of the probability of the event to its prob...

Q: Find the critical value tc for the confidence level c=0.98 and sample size n=21

A: The critical value tc for 98% confidence level with sample size 21:The confidence level is 98%. Tha...

Q: This study investigated the cognitive effects of stimulant medication in children with Attention-Def...

A: Solution:The appropriate statistical analysis to determine if there is an effect of drug dose on CPT...

Q: Part G-I, explain TI84 USE IF APPLICABLE

A: g) Computation of F-statistic:F-statistic can be obtained by dividing the mean square of model by th...

Q: Assume that we have two normal distributions both with means 0 and standard deviations σ1 and σ2. If...

A: We are given two normal distributions with mean = 0 and standard deviations σ1 and σ2.

Q: A real estate agent believes that the value of houses in the neighborhood she works in has increased...

A: It is given that the alterative hypothesis is as follows: Ha : µd > 0, the t test statistic is 7....

Q: Total plasma volume is important in determining the required plasma component in blood replacement t...

A: Hello there! there are more than 3 sub parts in question. It is against our policies to solve more ...

Q: The point on a normal distribution (mean equals 6 and standard deviation equals 9) that is greater t...

A: The given information is that the scores distributed normally with mean 6 and standard deviation 9.F...