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Anna71 [15]
2 years ago
9

A newspaper for a large city launches a new advertising campaign focusing on the number of digital subscriptions. The equation S

(t)=31,500(1.034)^t approximates the number of digital subscriptions S as a function of t months after the launch of the advertising campaign. Determine the statements that interpret the parameters of the function S(t).
A. The newspaper had 31,500 digital subscriptions when the advertising campaign was launched.

B. The number of digital subscriptions increases by 3.4% each month.

C. The number of digital subscriptions increases by 103.4% each month.

D. The number of digital subscriptions increases by 3.4% each year.

E. The newspaper had 32,571 digital subscriptions when the advertising campaign was launched.
Mathematics
1 answer:
murzikaleks [220]2 years ago
7 0
The answer is c. the number of digital subscriptions increases by 103.4% each month.
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The mean of a normal probability distribution is 500 and the standard deviation is 10. about 95 percent of the observations lie
PIT_PIT [208]

Answer:

So about 95 percent of the observations lie between 480 and 520.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviations of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

The mean is 500 and the standard deviation is 10.

About 95 percent of the observations lie between what two values?

From the Empirical Rule, this is from 500 - 2*10 = 480 to 500 + 2*10 = 520.

So about 95 percent of the observations lie between 480 and 520.

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3 years ago
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We want to solve
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6 0
3 years ago
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3 years ago
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Bas_tet [7]

Answer:

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