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alexgriva [62]
3 years ago
13

A research team investigates the potential association between hours of work and smoking. They want to see whether there is a di

fference in number of smokes per day between smokers who work about 40 hours per week and those who work 55 hours or more. If they were to use the hypothesis testing procedure for this research question, what would be the appropriate test statistic to use
Mathematics
1 answer:
Goryan [66]3 years ago
8 0

Answer:

chi-square

Step-by-step explanation:

According to the given situation, Chi-square statistic would be considered for as we have to determine whether working hours and smoking are attached with each other or not.

To know whether working hours based on smoking or there is an important relationship between both- So Chi-square statistic would be used

Therefore the test that should be used is chi-square

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A pair of dice is rolled. Find the probability for P(not 2 or not 12)
irakobra [83]

Answer:

There’s only one way to get 12 when 2 dice are tossed, both have to equal 6. There are 6 ways tossing a single die can come out (1,2,3,4,5,6), so if you toss dice, the second die could have any one of six values with each of the numbers that could result from the first toss (e.g., 1 from die 1 and 1,2,3,4,5, or 6 from die 2). So, considering there are 6 ways to fill each of two slots, there are 6 x 6 = 36 possible outcomes of tossing two dice. Only one of them equals 12, so p(12 given 2 dice tossed) = 1/36 = 0.02777777777778.

3 0
3 years ago
Evaluate the expression |x-10| when x= -8<br><br> a. -8<br> b. -18<br> c. 8<br> d. -18
nordsb [41]
|x-10| when x = -8
| - 8 - 10 | = |-18| = 18 <==
4 0
3 years ago
Write the expression as a single natural logarithm.3In3+3Inc
k0ka [10]

Answer:

ln(27c^3)

Step-by-step explanation:

Given: 3ln(3)+3ln(c)

If there is a coefficient in front of a log or ln, that means it becomes an exponent.

ln(3^3)+ln(c^3)

Simplify the exponent.

ln(27)+ln(c^3)

When there is addition between two logarithms or natural logarithms, it means they multiply together.

ln(27c^3)

3 0
4 years ago
Read 2 more answers
Photo above <br><br>please answer
alina1380 [7]
I THINK the answer would be around 2/3/4 paper clips, I'm not sure. And keep in mind, I;m not responsible for any wrong answers/ invalid responses.
5 0
4 years ago
Is (4, 2) a solution to the equation y = x2 − 7x?
sergey [27]

Answer:

not rlly

Step-by-step explanation:

you need more information to solve that type of equation

8 0
3 years ago
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