Answer:
Probability of choosing number = 0.9192
Step-by-step explanation:
Given:
New mean = 87.8
Mean = 85
Standard deviation = 14
Number picked = 49
Find:
Probability of choosing number
Computation:
Probability of choosing number = [New mean - Mean] / [Standard deviation / √Number picked]
Probability of choosing number <= [(87.8-85)]/[(14/7)]
Probability of choosing number = 0.9192
Answer:

And since we know the surface area 326.7 in^2 we can solve for the value of r like this:

And replacing we got:

And the best answer would be:
5.1 in
Step-by-step explanation:
For this case we need to use the formula for the surface area of a sphere given by:

And since we know the surface area 326.7 in^2 we can solve for the value of r like this:

And replacing we got:

And the best answer would be:
5.1 in
Yes, Harrison's way doesn't work because 5/5 = 1 and 4 1's don't make 22/5
Answer:
61 pens, 244 batteries
Step-by-step explanation:
4*3x+4x=976
16x=976
x=61
4x=244