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anazia10
12.08.2021 •
Mathematics
In a sample of 77 children, the mean age at which they first began to combine words was 16.5 months, with a sample standard deviation of 9.6 months. Compute a 90% confidence interval for the mean age at which children first begin to combine words.
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Ответ:
C) 92 DAYS
Step-by-step explanation:
V=S/t
t=?
S=48 360 000miles
V=22000mph
t=V/S