All categories

3 years ago

The following data show the different types of pet food stores in the area carry.

Mathematics

1 answer:

PtichkaEL [24]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

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.

5 0

3 years ago

Which could be the missing data item for the given set of data if the median of the complete data set is 50?

gogolik [260]

Answer:

Find the median of this data

21+23+60+60+50+54+54+59+26+15+43+15=480/ 12 = 40

Now the median should be 50 so take 50 - 40 = 10

The missing number from the data is 10

5 0

3 years ago

Read 2 more answers

The sum of two numbers is 52. One number is 3 times as large as the other. What are the numbers?

JulsSmile [24]

Let x be the smaller number.
Then 3x is the larger number.
We also know that the smaller added to the larger is 52, or:
x + 3x = 52
4x =52
x = 13
Therefore the smaller is 13, the larger is 3(13)=39.

3 0

3 years ago

Read 2 more answers

send a local little league has a total of 60 players 80% of whom are all right hand how many right-handed players are there

Olin [163]

%10 of 60 = 6
Therefore %80 of 60 = 8*6
= 48.

6 0

3 years ago

How do I subtract and add fractions 7-9 questions please help

lesya692 [45]

Okay,so u make the denominator the same by multiplying the fraction it's self by a number that will make the denominator the same.Then you add or subtract the the whole numbers together, then you add or subtract the numerators keep the denominator as you got when you multipled it.
Hope this helps

7 0

3 years ago