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2 years ago

What is the y-intercept of this line?

Mathematics

2 answers:

Zolol [24]2 years ago

8 0

The y intercept of that line is -1.

Ahat [919]2 years ago

7 0

Answer:

the answer is -1 so the intercept is -1

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The manager of a symphony in a large city wants to investigate music preferences for adults and students in the city. Let pA rep

monitta

Answer:

Answer E

Step-by-step explanation

The statement gives a probability of approximately 0.022 for the difference in sample proportions, pˆA−pˆS, being greater than 0.

6 0

3 years ago

You are a nascar fan that collects cars that are 1:64 scale to the original car. if your collection has cars that ar 3 inches in

Nitella [24]

The scale is 1:64.

Therefore if the length of the model is 3 inches, the true length of the vehicle is
3 * 64 = 192 inches = 192/12 ft = 16 ft

Answer: 16 feet

3 0

3 years ago

Read 2 more answers

Example 1: Calculation of Normal Probabilities Using ????????-Scores and Tables of Standard Normal Areas The U.S. Department of

Molodets [167]

Answer:

i) 0.872

ii) 0.300

iii) 0.76

iv) 0.704

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $261.50 per month

Standard Deviation, σ = $16.25

We are given that the distribution of monthly food cost for a 14- to 18-year-old male is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(Less than $280)

$P( x < 280) = P( z < \displaystyle\frac{280 - 261.50}{16.25}) = P(z< 1.138)$

Calculation the value from standard normal z table, we have,

$P(x < 280) = 0.872 = 87.2\%$

b) P(More than $270)

P(x > 270)

$P( x > 270) = P( z > \displaystyle\frac{270 - 261.50}{16.25}) = P(z > 0.523)$

$= 1 - P(z \leq 0.523)$

Calculation the value from standard normal z table, we have,

$P(x > 270) = 1 - 0.700 = 0.300 = 30.0\%$

c) P(More than $250)

P(x > 250)

$P( x > 250) = P( z > \displaystyle\frac{250 - 261.50}{16.25}) = P(z > -0.707)$

$= 1 - P(z \leq -0.707)$

Calculation the value from standard normal z table, we have,

$P(x > 250) = 1 - 0.240 = 0.76 = 76.0\%$

d) P(Between $240 and $275)

$P(240 \leq x \leq 275) = P(\displaystyle\frac{240 - 261.50}{16.25} \leq z \leq \displaystyle\frac{275-261.50}{16.25}) = P(-1.323 \leq z \leq 0.8307)\\\\= P(z \leq 0.8307) - P(z < -1.323)\\= 0.797 - 0.093 = 0.704 = 70.4\%$

$P(240 \leq x \leq 275) = 70.4\%$

e) Thus, 0.704 is the probability that the monthly food cost for a randomly selected 14- to 18-year-old male is between $240 and $275.

5 0

3 years ago

Solve |x| + 7 < 4. Please help

PilotLPTM [1.2K]

Answer:

no solution

Step-by-step explanation:

Subtract 7 from both sides of the inequality:

|x| +7 -7 < 4 -7

|x| < -3

This has <u>no solution</u>, because an absolute value cannot be negative.

4 0

4 years ago

Please help with 15 and 16 (IF U KNOW)

Furkat [3]

15 is 48 and 16 will be tricky!

5 0

4 years ago