georgettemanga2001
18.02.2021 •
Mathematics
PLS HELP ITS URGENT!! ANSWER FOR POINTS
A random sample of 95 halogen light bulbs had a mean life of 531 hours with a standard
deviation of 33 hours. Construct a 90% confidence interval for the mean life of all light bulbs
of this type.
A) 525.4 < u <536.6
B) 515.3< u < 526.9
C) 527.2 < u <531.8
D) 523.8 < u < 529.5
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Ответ:
and i have to write more people wants me to
Ответ:
then for 1 minute 5.33/40 = 0.133
therefore for 50 minutes 50* 0.133 = 6.7 pages
In short Brandon can read 6.7 pages in 50 minutes