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3 years ago

14

The data below represent the weight losses for people on three different exercise programs.

1 answer:

uysha [10]3 years ago

8 0

Answer:

A. The risk of type l error increases and becomes too high.

Step-by-step explanation:

The overall level of significance increases as the number of t- tests ( used for comparing two, three or four means separately ) increases. This in turn increases the risk of type I error.

We might be tempted to apply the two sample t- test to all possible pairwise comparisons of means. This type of running t- test to several means comparison has the risk of increasing overall level of significance

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Write the range of the function f(x)=-(x+4)^2-3 using set notation

yulyashka [42]

Answer:

(−∞,−3], {y|y≤−3}

Step-by-step explanation:

Is that a answer choice?

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3 years ago

Find the area and perimeter.

____ [38]

Answer:

i have this question too and i cant figure it out.

Step-by-step explanation:

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3 years ago

Which situation involves a change modeled by a positive number but an end result modeled by a negative number? A.Leo enters an e

Scrat [10]

The positive number but a negative result would be :

C. Irene is scuba diving at –30 feet. She swims 10 feet toward the surface to watch a school of fish.

The positive value is she swam 10 feet up to the surface, but she is still below the surface, which would be a negative result.

8 0

4 years ago

Read 2 more answers

9. Use the distance formula to find the distance between the points (-4,-4) and (4,4).

Tanzania [10]

Answer:

16

Step-by-step explanation:

Distance formula = $(x_{1}-x_{2})+(y_{1}-y_{2})$

Depending on which point is A and Which point is B, the answer is one of the two.

However, there is no such thing as negative distance, so your answer is 16 points in a certain direction.

6 0

2 years ago

A loan of $36,000 is made at 6.75% interest, compounded annually. After how many years will the amount due reach $57,000 or more

irakobra [83]

Answer:

After 7.04 years the amount will reach $57,000 or more

Step-by-step explanation:

The rule of the compound interest is $A=P(1+\frac{r}{n})^{nt}$ , where

A is the new value

P is the initial value

r is the rate in decimal

n is the period of the time

t is the time

∵ A loan of $36,000 is made at 6.75% interest, compounded annually

∴ P = 36,000

∴ r = 6.75% = 6.75 ÷ 100 = 0.0675

∴ n = 1 ⇒ compounded annually

∵ The amount after t years will reach $57,000 or more

∴ A = 57,000

→ To find t substitute these values in the rule above

∵ 57,000 = 36,000 $(1+\frac{0.0675}{1})^{(1)(t)}$

∴ 57,000 = 36,000 $(1.0675)^{t}$

→ Divide both sides by 36,000

∵ $\frac{19}{12}$ = $(1.0675)^{t}$

→ Insert ㏒ in both sides

∴ ㏒( $\frac{19}{12}$ ) = ㏒ $(1.0675)^{t}$

→ Remember ㏒ $a^{n}$ = n ㏒( $a$ )

∵ ㏒( $\frac{19}{12}$ ) = <em>t</em> ㏒(1.0675)

→ Divide both sides by ㏒(1.0675)

∴ 7.035151337 = <em>t</em>

<em>∴ </em><em>t </em>≅ 7.04

∴ After 7.04 years the amount will reach $57,000 or more

4 0

3 years ago