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Mice21 [21]
3 years ago
12

Identify the type of observational study described. A statistical analyst obtains data about ankle injuries by examining a hospi

tal's records from the past 3 years. cross-sectional retrospective prospective
Mathematics
1 answer:
spin [16.1K]3 years ago
8 0

Answer: Retrospective

Step-by-step explanation:

A retrospective observational study which is used in medical and psychological research by checking historic records .

This study looks backwards in history to examine exposures to suspected risk or protection factors in relation to an outcome that is considered at the beginning of the study.

The given statement says that  A statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years.

Hence, this is a retrospective observational study.

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What is in the next box?​
Dafna1 [17]

Answer:

-64

fillerfillerfillerfillerfiller

Step-by-step explanation:

multiplying by -4 each time

4 0
3 years ago
Solve the following system of equations using substitution.
dolphi86 [110]
It's A. If U=16, 6+10=16
and if you plug in the numbers for the second equation it's 36=2(10)+16
6 0
3 years ago
A restaurant sells burritos for $8.00 each. The cost of the meat is $1.50 and the cost of the other ingredients is $1.00 for eac
Zina [86]

Answer: $550

Step-by-step explanation:                                                                                                                            

How much is the profit for 1 burrito?: $8 - ($1.50+$1) = $5.5

So, profit for 100 burritos is $5.5 x 100 = $550.

Hope this helps.

4 0
2 years ago
Read 2 more answers
Two cyclists, 112 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other, and the
Iteru [2.4K]

Answer:

Speed of a= 21 miles/hr

r = Speed of b= 7 miles/hr

Speed of a = 3r

Step-by-step explanation:

The cyclist are 112 miles apart

Time traveled by two = 4 hours

Speed of a = 3 * speed of b

If a cylcles 3 times More than b, then a will cover 3*distance of b

But speed = distance/time

Time = 4hours

Total distance=112

a = 3b

3b + b = 112

4b = 112

b = 112/4

b = 28 miles

a = 3b

a = 3*28

a = 84 Miles

They bought traveled 4 hours

Speed of a = 84miles/4 hours

Speed of a= 21 miles/hr

Speed of b = 28miles/4 hours

Speed of b = 7 miles/hr

5 0
3 years ago
Christian reads 14 book every 23 week. How many books does Christian read per week?
DedPeter [7]

Answer:

0.609 / week  ( to nearest  thousandth)

or you can state it as 60.9% of a book per week

Step-by-step explanation:

That would be 14/23 =  0.609 / week

6 0
2 years ago
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