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3 years ago

30 points plus brainliest if you get it right with step by step explanation.

Mathematics

1 answer:

Leto [7]3 years ago

8 0

Answer:

a. 150

b. y=150x+1200

Step-by-step explanation:

a. 1350-1200=150

b. if he opened it in 2005 he started his tutoring fee at 1200 that makes 1200 the y intercept

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It

Vilka [71]

Answer:

We conclude that the machine is under filling the bags.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 436.0 gram

Sample mean, $\bar{x}$ = 429.0 grams

Sample size, n = 40

Alpha, α = 0.05

Population standard deviation, σ = 23.0 grams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 436.0\text{ grams}\\H_A: \mu < 436.0\text{ grams}$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{429 - 436}{\frac{23}{\sqrt{40}} } = -1.92$

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, we conclude that the machine is under filling the bags.

8 0

3 years ago

How do you do unto rate?

Margarita [4]

If you mean unit rate you find it by dividing the top number by the bottom number to fin the singular number or unit rate.

4 0

3 years ago

An Someone plz help me plz :(

zlopas [31]

Answer:

Step-by-step explanation:

original 3:4

now 18:24

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6 0

2 years ago

3/4 is 1/3 of what number? Write a division expression to match this expression

WITCHER [35]

It would be 9/4. To find 1/3 of something you have to multiply it by 3. 9/4 should be considered as a division expression. Hope this helped!

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2 years ago

Evaluate the expression for c = -19.<br> C + 15 =

KonstantinChe [14]

Answer:

the Answer is -4

Step-by-step explanation:

since you add 15 to -19 you get -4

3 0

2 years ago

Read 2 more answers