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podryga [215]
2 years ago
9

Ken wants to purchase a boat. The purchase price of the boat is $ 15 , 000. The dealership will allow him to pay cash or finance

the boat for a down payment of $ 3 , 000.00 and 48 monthly payments of $ 300.00. Ken chose to finance the boat.
Mathematics
1 answer:
Gwar [14]2 years ago
6 0
He will spend $2,400 more by financing the boat
15000-(3000+(48*300)) =2400
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Tasha assembled a picture frame that is advertised as rectangular. The completed frame is 14 inches long and 10 inches wide. She
aalyn [17]

the diagonal of a rectangle is square root of (w^2 +l^2)


so square root of (14^2 +10^2) = 17.2 inches

since 20" is longer than 17.2 it can't be a rectangle

4 0
2 years ago
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Suppose that we want to investigate whether curfews correlate with differences in grades for students in middle school. We selec
Anton [14]

Answer:

Step-by-step explanation:

Hello!

Given the variables

X: Curfew of middle school students (Categorized Yes/No)

Y: Average grade of middle school students. (Categorized: A, B, C, and D)

The objective is to test if there is an association between both variables, you have to conduct a Chi-Square test of independence.

In the null hypothesis, you state that both variables are independent vs. the alternative hypothesis that the variables are dependent.

The hypotheses for this test are:

H₀: Pij= Pi. * P.j i= (1)Yes, (2)No; j= (1)A, (2)B, (3)C, (4)D

H₁: Te variables are not independent.

α: 0.05

X^2= sum\frac{(O_{ij}-E_{ij})^2}{E_{ij}} ~~X_{(r-1)*(c-1)}

Where

Oij is the observed frequency for the i-row and j-column

Eij is the expected frequency for the i-row and j-column

r= number of categories in the rows

c= number of categories in the columns

X^2_{H_0}= 1.4796703

p-value: 0.687

The p-value is greater than the significance level, so the decision is to not reject the null hypothesis. So using a 5% significance level, you can conclude that having a curfew and the average grades of middle schoolers are two independent variables.

3 0
2 years ago
A popular podcast poses questions to subscribers at the end of each segment, asking listeners to enter their
mario62 [17]

Answer:

The poll uses voluntary response, so the results tell us little about the population of all adults.

Step-by-step explanation:

I took the test

8 0
2 years ago
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Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the following data values: 560,
julsineya [31]

Answer:

z-score for value 560 = 0.6

z-score for value 650 = 1.5

z-score for value 500 = 0

z-score for value 450 = -0.5

z-score for value 300 = -2

Step-by-step explanation:

We are given a sample with a mean of 500 and a standard deviation of 100.

i.e., \mu = 500 and \sigma = 100

The z score distribution is given by;

              Z = \frac{X-\mu}{\sigma} ~ N(0,1)

where X represents the data values;

  • So, z score for value 560 is;

                 z score = \frac{560-500}{100} = 0.6

  • So, z score for value 650 is;

                 z score = \frac{650-500}{100} = 1.5

  • So, z score for value 500 is;

                 z score = \frac{500-500}{100} = 0

  • So, z score for value 450 is;

                 z score = \frac{450-500}{100} = -0.5

  • So, z score for value 300 is;

                 z score = \frac{300-500}{100} = -2

7 0
2 years ago
Daisy is making solid spikes for her Halloween costume. The spikes are shaped like right circular cones with base radius of 2 in
gregori [183]

Answer:

She can make 14 spikes maximum

6 0
2 years ago
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