# 1. Find the critical value ?)

1. Find the critical value

?) ??/z 2 , for a 96% confidence level.

?) ??/z 2 , for a 99.5% confidence level.

?) ??/z 2 , for a 98% confidence level and for a sample of size24.

?) ta/z 2 , for a 90% confidence level and for a sample of size39.

Solution :Given that,

a) At 96% confidence level

= 1 – 96%

= 1 – 0.96 =0.04

/2= 0.02Z/2= Z0.02  = 2.054

b) At 99.5% confidence level

= 1 – 99.5%

= 1 – 0.995 =0.005

/2= 0.0025Z/2= Z0.0025  = 2.81

c) sample size = n = 24

Degrees of freedom = df = n – 1 = 24 – 1 = 23

At 98% confidence level

= 1 – 98%

=1 – 0.98 =0.02

/2= 0.01t/2,df= t0.01,23 = 2.500

d) sample size = n = 39

Degrees of freedom = df = n – 1 = 39 – 1 = 38

At 90% confidence level

= 1 – 90%

=1 – 0.90 =0.10

/2= 0.05t/2,df= t0.05,38 = 1.686

##### "Our Prices Start at \$11.99. As Our First Client, Use Coupon Code GET15 to claim 15% Discount This Month!!"

Pages (275 words)
Standard price: \$0.00
Client Reviews
4.9
Sitejabber
4.6
Trustpilot
4.8
Our Guarantees
100% Confidentiality
Information about customers is confidential and never disclosed to third parties.
Original Writing
We complete all papers from scratch. You can get a plagiarism report.
Timely Delivery
No missed deadlines – 97% of assignments are completed in time.
Money Back
If you're confident that a writer didn't follow your order details, ask for a refund.

## Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
\$0.00
Power up Your Academic Success with the
Team of Professionals. We’ve Got Your Back.
Power up Your Study Success with Experts We’ve Got Your Back.