3 years ago

1. Gerald is an event photographer. In his

Mathematics

1 answer:

Effectus [21]3 years ago

6 0

The information is really hard to follow, you should ask the question with a screenshot of the data table.

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Based on the survey results from 300 selected students in the Burbank School District (BSD), the 98% confidence interval used to

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follows are the solution to this question:

Step-by-step explanation:

Please find the correct question in the attached file:

The formula for calculating the Confidence interval of proportion:

$\to CI=\hat{p} \pm Z_{\frac{\alpha}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}\\\\\to \hat{p}=\frac{\text{lower limit +upper limit}}{2}\\$

$=\frac{0.48+0.60}{2}\\\\=\frac{1.08}{2}\\\\=0.54$

The number of learners with access to working at home on a computer:

$= 0.54 \times 300 \\\\=162$

Lower limit =0.48

upper limit = 0.60

$\to margin \ error = \frac{\text{upper limit - lower limit}}{2}\\$

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What is a monthly finance charge if the average daily balance is $30, the daily periodic rate is 0.07% and the number of days in

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B. 63 Cents is the correct answer.

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Step-by-step explanation:

The circumference is just diameter x π (3.14 in this case) so 42 x 3.14 = 131.88

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3 years ago

Two brothers, Mark and Walter, each inherit $20000. Mark invests his inheritance in a savings account with an annual return of 2

Igoryamba

Answer:

$720

Step-by-step explanation:

$20000 - 100%

$x. - 2.5%

x=(20000*2.5)/100=500

20000+500=$20500 in one year (Mark)

20000 - 100

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x= (20000*6.1)/100 = 1220

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Rational

Step-by-step explanation:

-9 is rational because 9 is a perfect square and all perfect squares are rational.

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