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3 years ago

Here’s a freebie for anyone!

Mathematics

2 answers:

svetlana [45]3 years ago

7 0

Answer:

thank you

Step-by-step explanation:

elena-s [515]3 years ago

4 0

Answer:

fankssss

Step-by-step explanation:

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A software developer wants to know how many new computer games people buy each year. Assume a previous study found the standard

Marrrta [24]

Answer:

The minimum sample size required to ensure that the estimate has an error of at most 0.14 at the 95% level of confidence is n=567.

Step-by-step explanation:

We have to calculate the minimum sample size n needed to have a margin of error below 0.14.

The critical value of z for a 95% confidence interval is z=1.96.

To do that, we use the margin of error formula in function of n:

$MOE=\dfrac{z\cdot \sigma}{\sqrt{n}}\\\\\\n=\left(\dfrac{z\cdot \sigma}{MOE}\right)^2=\left(\dfrac{1.96\cdot 1.7}{0.14}\right)^2=(23.8)^2=566.42\approx 567$

The minimum sample size to have this margin of error is n = 567.

3 0

3 years ago

suzie spent 3 1/2 hours at the beach. she spent 45 minutes playing in the sand and the rest of the time playing in the water. ho

Anika [276]

Answer:

2 hours and 45 min

Explanation:

3 hours+30 minutes

subtract 30

3 hours

subtract 15

2 hours and 45 min

6 0

3 years ago

2 more than 5 minus -4, write the expression

leonid [27]

5-(-4)+2 should be the expression

4 0

3 years ago

Read 2 more answers

Julie ran 489 square feet how many square feet did Julie run rounded to the nearest 10 or 100

DerKrebs [107]

Answer:

490 or 500

Step-by-step explanation:

If we round to the 10th, Julie ran 490 feet.

I we round to the 100th, Julie ran 500 sq. ft.

5 0

3 years ago

Tell what each of the residual plots below indicates about the appropriateness of the linear model

ELEN [110]

The closer the points are/more uniform they are to the residual line, the better the fit. The more skewed and scattered they are, the model is a worse fit.

3 0

3 years ago