3 to the power of 5
you multiply 3 times 5 instead of 3 times 3 times 3 times 3 times 3
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It would be the first one because it’s going up by a constant rate
Answer: One sample z test for means
Step-by-step explanation:
From the information given, the sample size is large. It is greater than 30. Again, the population standard deviation is given. This means that the test statistic would be the z score which is determined by the formula
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = population standard deviation
The probability value would be determined from the normal distribution table.
Therefore, the hypothesis test that should be used is
One sample z test for means
Answer:37 and half hrs
Step-by-step explanation:
This is what I get
Myra: 50/2= 25 bulbs/hr.
Francis: 45/3= 15 bulbs/ hr
25+15= 40/hr. Together per hr
Need to find 150 bulbs how many hrs
40/1=150/t
40t=150
T= 150/4
T= 37.5
37hrs and 1/2
