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3 years ago

Select the correct answer.

Mathematics

1 answer:

aleksley [76]3 years ago

3 0

Answer:

$24,890.46, $25,109.59

Step-by-step explanation:

Given:

n = 48, the sample size

m = $25,000, th sample mean

σ = $3000, the maximum variance

The standard deviation is

s = √σ = √(3000) = 54.772

As a rule of thumb, the range is 4 times the standard deviation. Therefore the range is

R = 4*54.772 = 219.09

Half the range is

R/2 = 219.09/2 = 109.45

The required range is

(25000-109.45, 25000+109.45) = (24890.46, 25109.54)

Answer: $24,890.46, $25,109.54

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You are buying tickets to a school event. You may purchase at most 8 tickets to receive a discount. Write an inequality to expre

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8 is greater than or equal to x
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or x is less than or equal to 8

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3 years ago

Jean loves to go bird watching. One day, she saw 7 birds.The next day, she

Ludmilka [50]

Answer:

Jaw saw an average of 6 birds each day

Step-by-step explanation:

Given: One day, Jean saw 7 birds. The next day, she saw 11 birds. The next day, she saw no birds.

To find: average number of birds Jean saw each day

Solution:

Average is a central value of a set of terms.

Average of terms $x_1,x_2,x_3,...,x_n$ is given by $\frac{x_1+x_2+x_3+...+x_n}{n}$

Number of birds, Jean saw on day one $(x_1)$ = 7

Number of birds, Jean saw on the second one $(x_2)$ = 7

Number of birds, Jean saw on the third one $(x_3)$ = 7

So,

average number of birds Jean saw each day = $\frac{x_1+x_2+x_3}{3} =\frac{7+11+0}{3}=\frac{18}{3}=6$

Therefore,

Jaw saw an average of 6 birds each day

6 0

3 years ago

Sixteen scholars have volunteered to stay after school to help set up for the school musical. The musical director plans to orde

lapo4ka [179]

The director would have to pay $40.47.

If each scholar eats one slice of pizza, then there would be two pizza pies because 8 slices plus another 8 slices in 16

8+8=16

If all of them eat another .5 slice, adding up the halves would equal 8

.5 x 16 = 8

In total, the director would have to buy three pizzas which equals up to our total of $40.47

3 0

3 years ago

What is this helppp 1/2 + 1/5

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Answer:

$\frac{1}{2} + \frac{1}{5} \\ \\ = \frac{5 + 2}{10} \\ \\ = \frac{7}{10}$