The drama club is selling short-sleeved shirts for $5 each, and long-sleeved shirts for $10 each. They hope to sell all of the s
1 answer:
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Answer:
We accept the null hypothesis and the population mean is $120.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 100
Sample mean, = $120
Alpha, α = 0.01
Sample standard deviation, s = $25
First, we design the null and the alternate hypothesis
We use two-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
p-value one tail= 0.024
p-value two tail= 0.048
Conclusion:
Since the p-value for two tailed test is greater than the significance level, we fail to reject the null hypothesis and accept it.
Thus, the population mean is $120.
M is mid point of CP. M will divide the BPC in two equal parts
BMC and
BMP.
Area of BMP is equal to 21m^2
Since, BMC =
BMP
Area of BPC = Area of
BMC +Area of
BMP = 21 + 21 = 42m^2
and since ratio of AP:BP =1:3 so the area of BMP will be 1/3 of Area of
ABC
hence, Area of ABC = 63m^2
