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2 years ago

PLEASE HELP!!!

Mathematics

1 answer:

zloy xaker [14]2 years ago

8 0

Answer:

Step-by-step explanation:

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In a school of 145 students, each was asked to choose one or more activities from sport, music and drama.76 students choosr spor

GrogVix [38]

Answer:

100 students chose all three

Step-by-step explanation:

first make a row for each subject and put how many students chose said subject. then subtract the number of students that chose both from the total amount of a subject

hope this helped

4 0

2 years ago

Please answer !!Urgent

motikmotik

I'm sorry I don't know what this is can you explain it sike

7 0

2 years ago

HELP PLEASE What is the remainder when f(x) = x2 + 14x − 8 is divided by (x − 3)?

11111nata11111 [884]

Answer:

Step-by-step explanation:

Using the remainder theorem, that is

The remainder on dividing f(x) by (x - h) is the value of f(h)

here division by (x - 3) hence evaluate f(3) for remainder

f(3) = 3² + 14(3) - 8 = 9 + 42 - 8 = 43 ← remainder

6 0

2 years ago

One hundred times the quantity six plus five

Andru [333]

100 times (6+5)
100 times 11
100 groups of 11=1100
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3 0

3 years ago

Read 2 more answers

Consolidated Power, a large electric power utility, has just built a modern nuclear power plant. This plant discharges waste wat

Gemiola [76]

Answer:

We conclude that the plant should shut down.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 60

Sample mean, $\bar{x}$ = 61.498

Sample size, n = 100

Alpha, α = 0.05

Population standard deviation, σ = 6

a) First, we design the null and the alternate hypothesis such that the power plant will be shut down when the null hypothesis is rejected.

$H_{0}: \mu \leq 60\\H_A: \mu > 60$

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

b) Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{61.498 - 60}{\frac{6}{\sqrt{100}} } = 2.49$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.64$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, the temperature of waste water discharged is greater than 60°F. We conclude that the power plant will shut down.

Calculating the p-value from the z-table:

P-value = 0.0063

Since,

P-value < Significance level

We reject the null hypothesis and accept the alternate hypothesis. Thus, the temperature of waste water discharged is greater than 60°F. We conclude that the power plant will shut down.

7 0

3 years ago