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2 years ago

What is the equation of the function that is graphed as line b?

Mathematics

1 answer:

Juli2301 [7.4K]2 years ago

5 0

Following the slope of the line at x= 0 the line is at y =1 , at x=, it is at Y = 1.5, so the slope is 1/2

The y intercept is where the line crosses the y a is at x =0 which is 1

The equation would be y = 1/2x+ 1

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For bone density scores that are normally distributed with a mean of 0 and a standard deviation of 1, find the percentage of sc

mr Goodwill [35]

<span>In a normal distribution 68.27% of the values are within one standard deviation from the mean, 95.5% of the values are within two standard deviations from the mean, and 99.7 % of the values are within three standard deviations of the mean

With that you have the answer to the three questions:

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<span>a. significantly high (or at least 2 standard deviations above the mean).

99.5% of the values are within 2 standard deviations from the mean, half of 100% - 95.5% = 4.5% / 2 = 2.25% are above the mean, so the answer is 2.25%

b. significantly low (or at least 2 standard deviations below the mean).

The other half are below 2 standard deviations, so the answer is 2.25%

c. not significant (or less than 2 standard deviations away from the mean).

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3 years ago

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Hiii please help! i’ll give brainliest if you give a correct answer tysm!

VladimirAG [237]

answer

8/25

Step-by-step explanation:

so you would keep the first fraction (2/15) then you would change the symbol then you would flip the other fraction (5/12). then you would multiply 2*12=24 and 15*5=75. then you would simplifie it. it would be 8/25.

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3 years ago

Mark is paid semimonthly. his semi monthly salary is 1,389. what is his annual salary?

sergeinik [125]

Step-by-step explanation:

The answer should be 29,736

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2 years ago

The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed a s

Molodets [167]

Answer:

We conclude that there has been a significant decrease in the average price homes.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $220,000

Sample mean, $\bar{x}$ = $210,000

Sample size, n = 81

Significance level, α = 0.051

Population standard deviation, σ = $36,000

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 220000\text{ dollars}\\H_A: \mu < 210000\text{ dollars}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{210000 - 220000}{\frac{36000}{\sqrt{81}} } = -2.5$

Calculating the p-value from the z-table, we have:

P-value = 0 .00621

Since,

P-value < Significance level

We reject the null hypothesis and accept the alternate hypothesis. Thus, there has been a significant decrease in the average price homes.

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3 years ago

Why is simple interest useful for planning parts of your financial future?

Lady_Fox [76]

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3 years ago

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