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3 years ago

Describe the event as impossible, unlikely, equally likely, likely, or certain.

Mathematics

2 answers:

Diano4ka-milaya [45]3 years ago

5 0

$\boxed{\large{\bold{\textbf{\textsf{{\color{gold}{Answer \red{:)}}}}}}}}$

Chesley McNeil, local meteorologist, said there is a 75% chance of rain today. The probability of rain is

$\sf{\dfrac{75}{100} }$

$\sf{\dfrac{3}{4} }$

The probability of rain is 3/4

ira [324]3 years ago

3 0

Answer:

likely

Step-by-step explanation:

100% is certain, likely is around 75%, equally is around 50%, and unlikely is around 25%

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Amanda is mailing 5 remote control cars. The mass has a total of 3,470 grams, What is the mass of each car?

Cerrena [4.2K]

Answer:

Assuming each car has the same mass, 694 grams.

Step-by-step explanation:

3470 ÷ 5 = 694

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3 years ago

28 is what percent of 50?

nikdorinn [45]

Answer:

go to 100

56 is 56 percent of 100

28 is 56 percent of 50

Step-by-step explanation:

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3 years ago

Is 1/5 less than 5/8

iren [92.7K]

1/5 is less then 5/8

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3 years ago

What is the solution set of {x | x < -5} ∩ {x | x > 5}?

777dan777 [17]

This symbol "∩" means intersection of both sets or what do both sets contain that are the same..

First set contains all numbers less than -5 and the other set contains all numbers greater than 5 so the sets don't overlap at all.

The solution set is empty ∅

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3 years ago

An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From pre

Shtirlitz [24]

Answer:

Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Step-by-step explanation:

We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

Let $\mu$ = mean power consumption of microwave ovens.

So, Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Here, null hypothesis states that the mean power consumption of microwave ovens is no more than 250 W.

On the other hand, alternate hypothesis sates that the mean power consumption of microwave ovens is more than 250 W.

The test statistics that would be used here is One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

Hence, this would be the appropriate hypotheses to determine if the manufacturer's claim appears reasonable.

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3 years ago