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trasher [3.6K]
2 years ago
7

I need this to be solved please!

Mathematics
2 answers:
AleksAgata [21]2 years ago
6 0

Answer:

x=50

Explanation:

tiny-mole [99]2 years ago
4 0

Answer:

Today: Tuesday, 19th January 2021

4.13 PM

\tt \frac{1}{5} (x - 15) = 7

\tt  \frac{x}{5}  - 3 = 7

\tt \frac{x}{5}  = 7 + 3

\tt  \frac{x}{5}  = 10

{\boxed{  \tt\red{x = 50}}}

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Answer:

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3 years ago
A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the
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Answer:

The required sample size for the new study is 801.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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