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pishuonlain [190]
3 years ago
9

Determine whether the situation calls for a survey, an observational study, or an experiment.

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
8 0

Answer:

B. \displaystyle observational\:study

Explanation:

Compare people who have lower comprehension intelligence quotients than others.

I am joyous to assist you anytime.

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a news paper carrier has 10.30 in change. he has two more quarters than dimes but three times as many nickles as quarters. how m
Karolina [17]
A) .05n + .10d + .25 q = 10.30
B) d +2 = q
C) n = 3q
Substituting equations B and C into A
A) .05*3q + .10(q-2) + .25 q = 10.30
A) .15q + .1q -.2 + .25q = 10.30
A) .50q = 10.50
21 quarters

C) n = 3q
C) n = 3*21
63 nickels

B) d +2 = q
d + 2 = 21
19 dimes


4 0
3 years ago
A college student is moving into a campus dormitory. The student rents a moving truck for $19.95 plus $.99 per mile. Before retu
tiny-mole [99]

Answer:

60 miles

Step-by-step explanation:

you have to do 19.95+ .99x+ 65.32= 144.67

7 0
3 years ago
Graph p= 6d, p = 5d+ 15
ivanzaharov [21]

is this helpful?

Let me know the website I used was Desmos graphing calculator

4 0
3 years ago
NEED HELP PLEASE HELP (Please indicate answer for which part) :) Thank you
Ronch [10]

Answer:

A

Step-by-step explanation:

A

8 0
3 years ago
Suppose you roll a six-sided 50 times and calculate the mean roll, x .
Vitek1552 [10]

Answer:

0.07

a. the distribution will be a normal distribution.

c. we would suspicious ins there is a 2 % chance of getting the required value.

Step-by-step explanation:

Let the number of times, t be = 50

Assuming that the die is fair

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mean = 3.5

suppose we want tp find the probability of a 2 showing. The solution becomes:

probability = \frac{2}{6}  = \frac{1}{3}

c. the  mean of rolls will be 0.07

8 0
4 years ago
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