The owner of a new coffee shop is keeping track of how much each customer spends (in dollars). One hundred of these amounts are shown in the table below. These amounts will form the population for this question.

A random number table was used to generate the following random sample of dollar amounts:

7.43, 5.38, 6.39, 6.53, 4.72, 5.58, 3.63, 7.43, 5.29, 5.70

What is the mean of the given random sample? Round your answer to the hundredths place.

5.8

5.81

5.80

5.00

Given:

The random number table was used to generate the random sample of dollar amounts. The samples are 7.43, 5.38, 6.39, 6.53, 4.72, 5.58, 3.63, 7.43, 5.29, 5.70

We need to determine the mean of the given random sample.

Mean of the random sample:

The mean of the random sample can be determined using the formula,

Substituting the values, we have;

Rounding off to the neatest hundredth, we get;

Therefore, the mean of the random sample is 5.81

Hence, Option B is the correct answer.

c.

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)