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olya-2409 [2.1K]
2 years ago
13

A new actuarial test (Test A) was developed as a possible replacement for an old actuarial test (Test B). An actuary claimed tha

t the mean time to complete the new test A was more than the mean time to complete an old test B. The summary data for completion time (in minutes) are as follows.
Test A : n=9, X bar=160 minutes, S2=180 minutes
Test B : n=10 X bar=150 minutes, S2=30 minutes

a.At α=10%, use the Classical approach to test the actuary’s claim.
b.Using the P-value approach to conclude it.
Mathematics
1 answer:
alisha [4.7K]2 years ago
4 0
Test A is the answer
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Write and evaluate the expression. Then, complete the statements. Ten less than the quotient of thirty and a number Evaluate whe
Artyom0805 [142]

Answer:

expression:  (30/t) - 10

evaluation:  30/2 - 10 = 5

Step-by-step explanation:

8 0
3 years ago
Westley and Buttercup are each saving money. Westley starts with $85 in in his savings and add $5 per week (y=85+5x)
love history [14]

Answer:

After 5 weeks.

Step-by-step explanation:

Westley starts with $85 and saves $5 per week. So:

y=85+5x

Buttercup starts with $10 and saves $20 per week. So:

y=10+20x

When they have the same amount of money, the two equations will be equal to each other. Therefore:

85+5x=10+20x

Solve for x. Subtract 10 from both sides:

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Divide both sides by 15:

x=5

Westley and Buttercup will have the same amount of money after 5 weeks.

5 0
2 years ago
The range of the function f(k) = k2 + 2k + 1 is {25, 64}. What is the function’s domain?
MAXImum [283]
<span>f(k) = k2 + 2k + 1 = (k+1)^2
The range is what the function gives to you f(k)=25=5^2 or (-5)^2
f(k)=64=8^2 or (-8)^2

You need to find the k values for these boundary values to find the domain. 
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7 0
3 years ago
Note: For question 15, your teacher will grade your responses to ensure you receive proper credit for your answers.
sergejj [24]

Answer:

Juan rode more slowly, Rita's graph is much steaper than Juan's. This means that she went faster and in less time. Juan took longer time and went on a slower pace. That's why I chose Juan.

Step-by-step explanation:

Good luck! <3

7 0
3 years ago
Read 2 more answers
What are the solutions to<br> f (x) = x2 + 5x – 24
maxonik [38]
Answer: d/dx (f(x)) = 2x + 5
Ok done. Thank to me :>

6 0
2 years ago
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