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Alisiya [41]
3 years ago
9

Last semester you took 3 final exams and you want to figure out which exam score really is your best score. Here are the scores

from your classes. Which of your three exam scores is the worst when compared to the other students in your classes? Math: Your score = 78, Class mean = 82, Standard deviation = 5 History: Your score = 85, Class mean = 87, Standard deviation = 4 English: Your score = 80, Class mean = 76, Standard deviation = 2.5.
Mathematics
1 answer:
Mademuasel [1]3 years ago
6 0

Answer:

76

Step-by-step explanation:

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When graphing and using the slope-intercept equation, the slope top number tells us to do what? and the bottom number tells us t
Lesechka [4]

Answer:

Rise over Run

Step-by-step explanation:

The slope and y-intercept values indicate characteristics of the relationship between the two variables x and y. The slope indicates the rate of change in y per unit change in x. The y-intercept indicates the y-value when the x-value is 0.

5 0
3 years ago
A drug company conducts trials of a new vaccine for a rare but usually fatal disease. The company creates a
GalinKa [24]

Answer:

What can be said about the model are;

1) The company predicts 4 failures before success

2) Each trial is independent

3) The probability is the same for each trial

4) Success is defined as preventing the disease

Step-by-step explanation:

The probability of success for the vaccine, p = 0.2

Therefore, the probability that the vaccine is effective and prevents the disease = 0.2

A geometric distribution probability of success is given by the following formula;

P(X = x) = p × q⁽ˣ⁻¹⁾

The expected value, E(Y) = 1/p

The number of failures before success, E(Y) = (1 - p)/p = (1 - 0.2)/0.2 = 4

Where;

q = The probability of a trial failing = 1 - p = 1 - 0.2 = 0.8

q = 1 - p

∴ The e

The geometric model criteria are;

a) Each trial can only have one of two outcomes success or failure

b) The probability of success for each trial is fixed

c) The geometric distribution is concerned with finding how many trials are required to get one success

d) The trials are independent

Therefore, we have;

The number of failures the company predicts before a success = 4 failures

2) The trials are independent

3) Each trial has an equal probability

4) Success is defined by the effectiveness of the vaccine in the prevention of the disease

4 0
3 years ago
Please help me thanks
Harlamova29_29 [7]

Answer:

5\frac{7}{8}

Step-by-step explanation:

You subtract all those distances from 22 to calculate the remaining distance.

22-4\frac{3}{4}= 17\frac{1}{4}

17\frac{1}{4}-5\frac{1}{8}=12\frac{1}{8}

12\frac{1}{8}-0=12\frac{1}{8}

12\frac{1}{8}-6\frac{1}{4}=5\frac{7}{8}

So the answer is 5\frac{7}{8}

(Yes I did these in my head)

7 0
3 years ago
Help please!<br><br> Help would be appreciated.
kotegsom [21]

Answer:

\displaystyle 157,5

Step-by-step explanation:

\displaystyle 3\frac{3}{4}\:quibs = 1\:slep \\ \\ 3\frac{3}{4} \times 42 = 157\frac{1}{2} = 157,5

I am joyous to assist you anytime.

5 0
4 years ago
A few years​ ago, a total of 2669 thousand people lived in the metropolitan areas of Las​ Vegas, Nevada, and​ Sacramento, Califo
aniked [119]
Let's make equation for this problem. Let's say the population of LV is x, then Sacramento will be x+275 since <span>Sacramento had 275 thousand more residents than Las Vegas. Remember that their total population is 2669, so your equation will be </span>x+275 +x=2669 

If you solve this equation, you have x=1197, that is population of LV. So Sacramento is 1472.
3 0
3 years ago
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