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Vikki [24]
3 years ago
11

The school board administered a reading test to all eighth-grade students at High Achievers Charter School and determined that 1

0%, percent of them were reading below grade level.
Based on this data, which of the following conclusions are valid?

Choose 1 answer:
A 10% percent of students in this sample are reading below grade level, but we cannot conclude anything about the eighth-grade students at HACS.

B 10% percent of all students at HACS are reading below grade level.

C 10% percent of all eighth-grade students at HACS are reading below grade level.
Mathematics
2 answers:
marusya05 [52]3 years ago
6 0

Answer:

a

right on khan acadamy

Step-by-step explanation:

Wittaler [7]3 years ago
5 0

Answer:

the answer is C

Step-by-step explanation:

to all the people who say the answer is A, it is NOT! you might be doing another problem so i will give you the benefit of the dought, but the answer is C!

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Verizon offers two billing plans for local calls. Plan 1 charges $30 per month for unlimited calls, and Plan 2 charges $11 per m
rodikova [14]

Answer:

Number of monthly calls = 475

Step-by-step explanation:

Given:

Plan 1 = $30 per month unlimited calls

Plan 2 = $11 + $0.04(per call)

Find:

Number of monthly calls, plan 1 better than plan 2

Computation:

Plan 1 (Cost) < Plan 2 (Cost)

30 < 11 + 0.04(x)

19 < 0.04(x)

475 < (x)

Number of monthly calls = 475

6 0
2 years ago
Suppose that the probability that a customer plans to make a purchase is 0.32. Suppose that the probability of responding to an
Elanso [62]

Answer:

0.6495

Step-by-step explanation:

This is question based on conditional probability

The probability that a customer plans to make a purchase = 0.32.

The probability that a customer plans not to make a purchase = 1 - 0.32

= 0.68

The probability of responding to an advertisement given that the customer plans to make a purchase = 0.63

The probability of responding to an advertisement given that a person does not plan to make a purchase = 0.16.

Given that a person responds to the advertisement, what is the probability that they plan to make a purchase is calculated as:

0.32 × 0.63/(0.32 × 0.63) + (0.16 × 0.68)

= 0.2016/ 0.2016 + 0.1088

= 0.2016/0.3104

= 0.6494845361

Approximately = 0.6495

8 0
3 years ago
Jenny and Kelli randomly grab a piece of fruit after track practice, without looking. What is the probability that they both gra
kolezko [41]

Answer:

There is 2 apples

Step-by-step explanation:


7 0
3 years ago
Hello, how can I do this equation?
kompoz [17]
(9^x) - 3 = 2*3^x
(9^x) - 3 - (2*3^x) = (2*3^x) - (2*3^x)
(9^x) - (2*3^x) - 3 = 0
(3^2)^x - 2*(3^x) - 3 = 0
3^(2x) - 2*(3^x) - 3 = 0
3^(x*2) - 2*(3^x) - 3 = 0
(3^x)^2 - 2*(3^x) - 3 = 0
z^2 - 2*z - 3 = 0  ............ let z = 3^x
(z - 3)(z + 1) = 0

If z-3 = 0, then z = 3 when we isolate z
If z = 3, and z = 3^x, then
z = 3
3^x = 3
3^x = 3^1
x = 1
which is a solutin in terms of x

If z+1 = 0 then z = -1
If z = -1 and z = 3^x, then there are NO solutions for this part of the equation
The quantity 3^x is never negative no matter what the x value is

---------------------------------------------------------------

Answer: x = 1
4 0
3 years ago
What’s The coefficient in the expression 7x+ 14
nydimaria [60]

Answer:

7 is the coefficient.

3 0
2 years ago
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