One is in the thousands place and one is in the hundreds place
Just subtract 59/40 from 119/40
119/40-59/40=60/40
=6/4=3/2
So to make 59/40 equal to 119/40, we will add 3/2 to it
59/40+3/2=119/40
Answer: A. 1cm=0.3937 inch
B. 61.417inch
C. 5.1 ft
Step-by-step explanation:
A.
1inch=2.54cm
1/2.54=0.3937 inch
1cm=0.3937 inch
B. 156cm*0.3937=61.417 inch
C: 1 ft=12 inch
1:12=X:61.417
61.417 =12x
x=5.1 ft
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Answer:
95% confidence interval for the variance of the bowling ball weight is between a lower limit of 13.328 pounds and an upper limit of 14.672 pounds.
Step-by-step explanation:
Confidence interval is given as weight +/- margin of error (E)
weight = 14 pounds
sample sd = 0.94 pound
n = 10
degree of freedom = n - 1 = 10 - 1 = 9
confidence level (C) = 95% = 0.95
significance level = 1 - C = 1 - 0.95 = 0.05 = 5%
critical value (t) corresponding to 9 degrees of freedom and 5% significance level is 2.262
E = t × sample sd/√n = 2.262×0.94/√10 = 0.672 pounds
Lower limit of weight = weight - E = 14 - 0.672 = 13.328 pounds
Upper limit of weight = weight + E = 14 + 0.672 = 14.672 pounds.
95% confidence interval is (13.328, 14.672)
