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olga55 [171]
3 years ago
10

The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. Suppose that you wanted the tot

al width of the two-sided confidence interval on the mean life to be six hours at 95% confidence. What sample size should be used?
Mathematics
1 answer:
Temka [501]3 years ago
4 0

Answer:

Step-by-step explanation:

Download docx
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Determine the slope of the line represented by y=5x-7 ?
Reptile [31]

Step-by-step explanation:

that is totally easy.

in the slope intercept form of a line equation the factor of x is always the slope.

in general

y = ax + b

a = the slope.

so, in our case here

y = 5x - 7

5 is the slope.

and -7 is the y intercept (at what point does the line intercept the y-axis; that is the y value when x = 0).

7 0
3 years ago
Ms. M wants A LOT of tropical fish, so Mr. M must buy the biggest tank. Which tank should he buy, A or B? How much greater is th
NeX [460]

Answer:

tank A is bigger

Step-by-step explanation:

the volume is greater by 3%

8 0
3 years ago
Find the measures of the missing angles
Oliga [24]

Answer:

Step-by-step explanation:

∠1 = 180° - 88° = 92°

∠5 = 81° (alternate interior angles)

∠4 = 180° - ( 81° + 64° ) = 35°

∠3 = 180° - ( 81° + 35° ) = 64°

∠2 = 88° - 64° = 24°

4 0
3 years ago
Read 2 more answers
6. Richy has a bag of marbles. He gave 5/12 of
Tems11 [23]

Answer:

7/12

Step-by-step explanation:

12/12-5/12=7/12

7 0
3 years ago
The pth percentile is a value such that approximately a. p percent of the observations are less than the value and (100 - p) per
kogti [31]

Answer:

p percent of the observations are less than the value and (100 - p) percent are more than this value.

Step-by-step explanation:

Given : The pth percentile is a value such that approximately

Solution :

Definition : A percentile is a measure used in statistics indicating the value below which a given percentage of observations in a group of observations falls

So, The pth percentile means p percentage of observations in a group of observations falls bellow the value

So, (100-p) percentage of observations in a group of observations falls above the value

So, Option a is true

Hence p percent of the observations are less than the value and (100 - p) percent are more than this value.

5 0
3 years ago
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