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kenny6666 [7]
3 years ago
6

. According to a recent report, people smile an average of µ = 62 times per day. Assuming that the distribution of smiles is app

roximately normal with a standard deviation of σ = 18, find each of the following values: a. What proportion of people smile more than 80 times a day
Mathematics
1 answer:
Leokris [45]3 years ago
6 0
Idk my horse face sorry dear
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Fully simplify 7c - 4h - 2c - 5h​
astraxan [27]

Answer:

5c-9h

Step-by-step explanation:

1) 7c-4h-2c-5h

2) 5c-4h-5h

3) 5c-9h

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2 years ago
Evaluate the expression when a=14 and b=6. 5b/32a2
leonid [27]

Answer:

28/16071  as a decimal 0.00174226...

Step-by-step explanation:

Hope this helps!

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3 years ago
A racing car used 255 litres of fuel to complete a 340 km race. How many litres of fuel did the car use every 100km?
natka813 [3]
340 = 255
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100 times 255 = 25500
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3 years ago
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Estimation is best defined as: a. both a process of inferring the values of unknown samples statistics from those of known popul
Ghella [55]

Answer:

Option D is the correct answer - Estimation is best defined as   a process of inferring the values of unknown samples statistics from those of known population parameters

Step-by-step explanation:

Estimation involves the usage of the value of a statistic derived from a sample to estimate the value of a corresponding population parameter.

The sample provides information that can be extended, through several formal or informal processes, to determine a range most suitable to describe the missing information.

An estimate that turns out to be incorrect would either be termed as over-estimation or under-estimation. If the estimate exceeds the actual result, it is termed as an over-estimation, and as an under-estimation, if the estimate came short of the actual result.

Thus, option D is correct.

8 0
3 years ago
Find the volume of a baseball if the diameter is 2.86 inches
tatiyna

Answer:

8.1796

Step-by-step explanation:

2.86 x 2.86 = 8.1796

5 0
3 years ago
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