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1 year ago

20 points please help me I'm desperate and I will mark brainlyist

Mathematics

1 answer:

polet [3.4K]1 year ago

5 0

Answer:

(a) 48, 52, 54

(b) 6

Step-by-step explanation:

The sample mean is the mean of the sample. The range of sample means is the difference between the largest and smallest. As with all sampling processes, more data gives a better estimate.

The sample means are calculated in the attachment. For the different samples, they are ...

The range of the sample means is the difference between the largest and the smallest:

range = 54 -48 = 6

More data is better, and the closer the estimates are to each other, the better confidence they offer. The true statements are ...

A single sample mean will tend to be a worse estimate than the mean of the sample means.
The closer the range of sample means is to zero, the more confident they can be in their estimate.

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A bread recipe calls for 1/4 tsp of salt. How much salt is needed to make 6 loaves of bread?

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Answer:

1 1/2 tsp

Step-by-step explanation:

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3 years ago

"Which ratio does not belong with the other three?" Explain your reasoning." Help me on 3. Please

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12:15 does not belong, since that is a ratio of 4:5, whilst the others are all 3:4.

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4 years ago

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What is (1.7x10^4)x(8.5x10^-2) in standard form

Temka [501]

Answer:

1.445 × 10³

Step-by-step explanation:

Standard form is a way of writing a small number or a large number easily.

We should give the final answer in standard form.

1) (1.7 × 10⁴) × (8.5 × 10⁻²)

We enter this directly into the calculator to obtain a solution.

= 1445

We write this in standard form we have :

1.445 × 10³

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3 years ago

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Express the confidence interval (0.036, 0.086) in the form of p-e< p

lina2011 [118]

Answer:

p-e< p < p+e

(0.061 - 0.025) < 0.061 < (0.061 + 0.025)

0.036 < 0.061 < 0.086

Step-by-step explanation:

Given;

Confidence interval CI = (a,b) = (0.036, 0.086)

Lower bound a = 0.036

Upper bound b = 0.086

To express in the form;

p-e< p < p+e

Where;

p = mean Proportion

and

e = margin of error

The mean p =( lower bound + higher bound)/2

p = (a+b)/2

Substituting the values;

p = (0.036+0.086)/2

Mean Proportion p = 0.061

The margin of error e = (b-a)/2

Substituting the given values;

e = (0.086-0.036)/2

e = 0.025

Re-writing in the stated form, with p = 0.061 and e = 0.025

p-e< p < p+e

(0.061 - 0.025) < 0.061 < (0.061 + 0.025)

0.036 < 0.061 < 0.086

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4 years ago

F = {(x, y): y = 2x + 3} and D= {2, 4, 6} then, find Range of f

Aliun [14]

Answer:

R= {7, 11, 15}

Step-by-step explanation:

Since we already know what the Domain is for f (2, 4, 6) we can use that to get the range

Since the domain is also x let's replace x for 2

y=2(2)+3= 4+3=7

One of the range is 7

Replace x for 4

y=2(4)+3= 8+3= 11

One of the other range is 11

Replace x for 6

y= 2(6)+3= 12+3= 15

The last range is 15

So the range is R= {7, 11, 15}

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3 years ago

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