Don’t need to show work please help
2 answers:
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Answer:
The required interval is (26.23 , 27.37)
Step-by-step explanation:
The mean is = 26.8
The standard deviation is = 7.42
n = 654
At 95% confidence interval, the z score is 1.96
To find the desired interval we will calculate as:
And
and
= 27.37 and 26.23
So, the required interval is (26.23 , 27.37)
Answer:
The amount which will be in account after 6 years is $ 1120 .
Step-by-step explanation:
Given as :
The principal in the account = $740
The rate of interest = 6.7 % compounded monthly
The time period = 6 years
Let the Amount in the account after 6 years = A
<u>From compound interest method </u>
Amount = Principal ×
Or, A = $ 740 ×
Or, A = $ 740 ×
or, A = $ 740 × 1.5164 = $ 1122.136
Hence The amount which will be in account after 6 years is $ 1120 . Answer