Answer:
The probability is 0.9909.
Step-by-step explanation:
Test statistic (z) = (sample mean - population mean) ÷ (sd/√n)
sample mean = 290 days
population mean = 298 days
sd = 22 days
n = 42
z = (290 - 298) ÷ (22/√42) = -8 ÷ 3.395 = -2.36
The cumulative area of the test statistic is the probability that the mean gestation period is less than 290 days. The cumulative area is 0.9909. Therefore the probability is 0.9909.
Answer:
according to google there are 30 inches in a full step
Step-by-step explanation:
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8. Which one of the following examples represents a repeating decimal?
A. 4.252525
B. 1.111114
C. 0.123123
D. 0.777777
Answer:
-1.42857
Step-by-step explanation:
Answer:
75+32·M=X
M=Months she goes to the gym
X=Total she pays
Step-by-step explanation:
you need to variables
M= represents the amount of months she goes to the gym
X= represents the total that she paid
$75(fee)+32·M($ per month)=X(the total)
Example= 1 month
75+32·1=X
107=X-----> Total she pays
