Urgent Statistics Homework Help Plz

URGENT! BIO STATISTICS HELP?

Have you been given a value for 90% confidence interval and the number the number of individuals sampled (what is n?)?
If you have, then write that under additional information and I could try to help because the way I know how to figure this out is using a value given for confidence interval (like 1.96 for 95%) and with the sample size (n).

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I don't know what table B is (I'm not from America, so we might do things different in Canada) but if you have learned about z-score, there is an example of a question in the document (link below) on page 14 that could help you. It would make more sense if you looked at that then having me try to explain it because I haven't does this in a couple of years.

http://bk.psu.edu/clt/Stat200/Chapter6_Printable.pdf

Best of luck. If you still need help, just send me an email :)

Math statistics help urgent?

Exhibit 6-9
The average price of personal computers manufactured by MNM Company is $1,200 with a standard deviation of $220. Furthermore, it is known that the computer prices manufactured by MNM are normally distributed.


Refer to Exhibit 6-9. If 513 of the MNM computers were priced at or below $647.80, how many computers were produced by MNM?

a. 185,500
b. 513,000
c. 85,500

U.S history question plz help????????????

1.) which four states had the highest unemployment rate in
1934?
2.)which region of the country -- east or west of the Mississippi
River--was better off in 1934???
a.) what statistic support your choice?

Statistics- Confidence Intervals for Two population mean?

Alexis -

You are correct in both your formula and using the Normal. Never, ever use a t distribution with a proportion problem!

I got similar answers except I used the "exact" values in my calculator rather than rounding such as 16/ 414 and 398/414 ... here they are to more decimal places:

[0.00175, 0.04923]

Hope that helps

A math question about average?? Plz help!!?

(x + y)/2 = 11/2
which gives
x+y=11 ......... eq 1

now
((1/x) + (1/y))/2=11/24
so (1/x) + (1/y)=11/12
(x+y)/xy = 11/12
put value of x+y from eqn 1
11/xy=11/22
xy=22
x=22/y

put in eqn 1
y + 22/y =11
you get y solving this quadratic eqn
put the value of y in eq 1 you get X
;)

I REALLY NEED SOME HELP!! URGENTLY!!! PLEASE!!!?

Economics Homework...

1. If the supply of the Czech Republic koruna decreases relative to the U.S. dollar, then
Choose one answer.
A. the U.S. dollar will appreciate.
B. the U.S. dollar will depreciate.
C. the quantity demanded of Czech koruna would increase.
D. the quantity demanded of U.S. dollars would increase.
E. the Czech koruna will depreciate.


2. Suppose interest rates fall in the United States, but they don't fall in Morocco. What is the short-run impact of this change in interest rates on the value of the U.S. dollar (USD), the value of the Moroccan dirham (MAD), and U.S. net exports (based on the changing value of the dollar)?

USD / MAD / Net Exports
Choose one answer.
A. Appreciate / Depreciate / Increase
B. Appreciate / Depreciate / Decrease
C. Depreciate / Depreciate / Increase
D. Depreciate / Appreciate / Decrease
E. Depreciate / Appreciate / Increase


3. If interest rates fall in the United States relative to the rest of the world, we can expect that
Choose one answer.
A. U.S. exporters will be hurt.
B. there will be greater demand for the U.S. dollar.
C. foreign financial investment will increase.
D. imports will increase.
E. the U.S. dollar will depreciate.

4. If the U.S. experiences an increase in exports, ceteris paribus, then
Choose one answer.
A. the U.S. dollar will appreciate because of increased supply of U.S. dollars by foreign nations.
B. the U.S. dollar will depreciate because of increased supply of U.S. dollars by foreign nations.
C. the U.S. dollar will appreciate because of increased demand for U.S. dollars by foreign nations.

D. the U.S. dollar will depreciate because of increased demand for U.S. dollars by foreign nations.
E. the U.S. dollar will depreciate and the U.S. will import more foreign goods.