To solve for the confidence interval for the true average
percentage elongation, we use the z statistic. The formula for confidence
interval is given as:
Confidence interval = x ± z σ / sqrt (n)
where,
x = the sample mean = 8.63
σ = sample standard deviation = 0.79
n = number of samples = 56
From the standard distribution tables, the value of z at
95% confidence interval is:
z = 1.96
Therefore substituting the known values into the
equation:
Confidence interval = 8.63 ± (1.96) (0.79) / sqrt (56)
Confidence interval = 8.63 ± 0.207
Confidence interval = 8.42, 8.84
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Answer:
i think its A
Step-by-step explanation:
Answer:
89
Step-by-step explanation:
25 watches equals a $50 bonus + 25 * 4
25*4=100
100+50=150
150 can go into 506 three times with a remainder of 56.
since it fits three times that is 75 watches
now divided the remainder by 4 and add this to 75.
56/4=14
75+14=89
89 watches
Answer:
12pq
Step-by-step explanation:
i dont know tbh but i try my best to help out now anyways