Saturday
September 20, 2014

Homework Help: statistics

Posted by UPD on Thursday, April 15, 2010 at 3:13am.

Information given:the distribution of male head circumference (HC) is normal with a mean of 56cm and a standard deviation of 1.8cm

first question
-the prob that HC of a random chosen man is larger than 57.8cm is?
Work: pr(x)>57.8cm
z=(57.8-56)=1.8--->.9641 i got it wrong?

Second ques:
what is is the sampling distrubution of the avg HC of 9 random selected men?

Third: the prob that the average HC of 9 random selected men is larger then 57.8cm is?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Stats - nformation given:the distribution of male head circumference (HC) is ...
statistics - Info given:With a random sample of 9 men. let X denote the number ...
stats - Info given:With a random sample of 9 men. let X denote the number of men...
Statistics - DIAGRAMS MUST BE DRAWN Given the standard normal distribution, ...
MATH - Which of the following normal distributions has the smallest spread? A. A...
Math (Statistic) - Considered the sampling distribution of a sample mean ...
Statistics - This is the first question..... For a population that has a ...
Statistics - In a given normal distribution, the standard deviation is 14.4 and ...
statistics - An SRS of size n is taken from a large population whose ...
stats - the head circumferences of adult males have a bell-shaped distribution ...

Search
Members