Question

# if n=27, x bar =39, s=3, find the margin of error at a 98% confidence interval.

if n=27, x bar =39, s=3, find the margin of error at a 98% confidence interval.

Solution :

Given that, = 39

s =3

n =27 Degrees of freedom = df = n - 1 =27 - 1 =26

At 98% confidence level the t is = 1 - 98% = 1 - 0.98 = 0.02 / 2 = 0.02/ 2 = 0.01

t /2,df = t0.01,26 =2.479 ( using student t table)

Margin of error = E = t /2,df * (s / n)

=2.479 * ( 3/ 27)

= 1.4313

Margin of error = E =1.4313

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• V Sophia Johnson is 24 years old and single, lives in an apartment, and has no...
• CS 203 Discrete Structure 2 Create a Microsoft Access Database consisting of the following two tables:...
• Interest earned on the cash balance in the bank is recorded by the bank as: a....
• Describe the cellular mechanism of : 1- How glucose molecules are transported by the epithelial cells...
• Assume a firm is evaluating a stream of cash flows. Today the firm incurs a cost...
• In 100 words what do these measures tell you about the “spread” of the data? weight(x)...
• Consider an investment that pays $18.8 in year 1, and then stabilizes and pays$6.18 every...