1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darya [45]
2 years ago
13

Please help!! due in 5 mins

Mathematics
1 answer:
Serhud [2]2 years ago
6 0
Question 8 should be y=-5/2x-1. And question 9 should be y=1/2x-7.
You might be interested in
In college​ basketball, a shot made from beyond a designated arc radiating about 20 ft from the basket is worth three points ins
denis-greek [22]

Answer:

a) By the Central Limit Theorem, the distribution would be approximately normal, with mean \mu = 0.45 and standard deviation s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.45*0.55}{100}} = 0.0497

b) 4.02 standard deviations below the mean.

c) Making 25 or less shots has a pvalue of -4.02. Z-scores lower than -2 are considered surprising, so yes, it would be surprising for him to make only 25 of these shots.

Step-by-step explanation:

To solve this question, we are going to need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For proportions, we have that the mean is \mu = p and the standard deviation is s = \sqrt{\frac{p(1-p)}{n}}

In this problem, we have that:

p = 0.45, n = 100

a)By the Central Limit Theorem, the distribution would be approximately normal, with mean \mu = 0.45 and standard deviation s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.45*0.55}{100}} = 0.0497

b)This is Z when X = 0.25.

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.25 – 0.45}{0.0497}

Z = -4.02

4.02 standard deviations below the mean.

c) Making 25 or less shots has a pvalue of -4.02. Z-scores lower than -2 are considered

surprising, so yes, it would be surprising for him to make only 25 of these shots.

3 0
2 years ago
The ratio of red cars to blue cars in a parking lot was 8 : 7. If there were 48 red cars, how many blue cars were there?
shutvik [7]
What you need to do is multiply both sides by the same number. If 8 times 6 is 48, then 7 times 6 is your answer.
8 0
3 years ago
Choose the expression that is equal to 28.3
KengaRu [80]

There are no other expressions intered. Please write them too.

Answer:

It CAN be 28.30

3 0
2 years ago
The sum of two numbers increased by 5
Brut [27]

Answer:

If the sum is x, x+5

Step-by-step explanation:

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B2%7D%2B2%2B%3D-2%5C%5C" id="TexFormula1" title="\frac{x}{2}+2+=-2\\" alt="\fr
expeople1 [14]
-8 is your answer so x=-8
5 0
3 years ago
Other questions:
  • Factor 1/8 out of 1/8x + 7/8
    13·1 answer
  • How do u benchmark 8/11/12 and 2/11/20
    12·1 answer
  • 1
    11·1 answer
  • 0.6704 repeating as a fraction?
    8·1 answer
  • Scarborough High School ordered several replacement books for the mathematics department. When the box of books arrived at the h
    6·1 answer
  • A teacher has 613 fliers to divide equally among 29 students. About how many fliers will each student receive?
    10·1 answer
  • What is the domain of this relation?
    5·2 answers
  • 10 apples for $3.50. How much is the cost per apple? *
    6·2 answers
  • List the first 5 multiples and find all the factors of 7 prime or composite
    12·1 answer
  • What was the first thing that was mad in the history
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!