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Elodia [21]
3 years ago
10

A group of students are randomly placed in either a traditional AP Stat class or an online-only AP Stat class. Both classes take

the same tests. On the first test, the 250 students in the traditional class got an average of 77.5 and a standard deviation of 8.4. The 190 students in the online class scored an average of 79.8 with a standard deviation of 5.1. What is the test statistic for a test with hypotheses
Mathematics
1 answer:
BaLLatris [955]3 years ago
8 0

Answer:

Mean or Expected Value:

μ

=

∑

x

i

n

X

x

P

(

x

)

Standard Deviation:

σ

=

√

∑

x

i

n

X

(

x

−

μ

)

2

P

(

x

)

Step-by-step explanation:

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A supermarket sells two flavors of cereal: a fruit flavor and a chocolate flavor. In a market survey, the event that a customer
Sedaia [141]
This is a binomial distribution.
p = 0.71, q = 1 - p = 1 - 0.71 = 0.29, n = 20

P(x ≤ 19) =1 - P(x = 20) = 1- 20C20 x (0.71)^(20 - 20) x (0.29)^20 = 1 - 0.29^20 = 1 - 0 = 1
4 0
3 years ago
Calcula y grafica la siguiente fracción afín y cuadratica y=3×2​
salantis [7]

Answer:

y = 6

Step-by-step explanation:

You just multiply the 3 and the 2 which equals 6

5 0
3 years ago
Which is SMALLER, -6.3 or -6.1?
Dominik [7]
I believe the answer is -6.3

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6 0
3 years ago
Can a 14 inch umbrella fit inside a suitcase that has dimensions of 9" x 12"? Explain.
inessss [21]
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5 0
3 years ago
Read 2 more answers
Iliana cubed the number of flowering plants in her garden, then added 2 vegetable plants. Let p represent the original number of
Natalija [7]

The correct answer is option D which is p ³+ 2; when p = 3 the number of plants is 29.

The complete question is given below:-

liana cubed the number of flowering plants in her garden, then added 2 vegetable plants. Let p represent the original number of plants in her garden. Which shows an expression to represent the total number of plants in her garden and the total number of plants if p = 3? 3 p minus 2; when p = 3 the number of plants is 7 3 p + 2; when p = 3 the number of plants is 11 p cubed minus 2; when p = 3 the number of plants is 25 p cubed + 2; when p = 3 the number of plants is 29

<h3 /><h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The given expression is liana cubed the number of flowering plants in her garden, then added 2 vegetable plants.

If she cubed the number of the plants will be:- P³

Now she added two vegetable plants:- 2

Then the equation will be:- p³ + 2. Now we will put the value of p = 3 in the equation.

Total number of the plants = ( 3 )³ + 2 = 27 + 2 = 29

Therefore the correct answer is option D which is p³+ 2; when p = 3 the number of plants is 29.

To know more about Expression follow

brainly.com/question/723406

#SPJ1

5 0
2 years ago
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