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DerKrebs [107]
3 years ago
7

Hello. please answer this question, I WILL mark brainliest :)

Mathematics
1 answer:
Ivanshal [37]3 years ago
5 0

Answer:

1. D) 0.113

2 C) 11

Step-by-step explanation:

1. #males that chose super strength/total males

  \frac{25}{222}= 0.113

2. the relative frequency can be converted to a percent which is 11.3%

   given that a percent is out of 100, the expected number would be 11

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Step-by-step explanation:

Hello!

Given the variables

X₁: Weight of a safety helmet for racers

X₂: Price of a safety helmet for racers

Note, there is n= 17 observed values for each variable so for all calculations I'll use this number and disregard the 18 mentioned in the text.

a) Scatterplot in attachment.

b) If you look at the diagram it seems that there is a negative linear regression between the price and the weight of the helmets, meaning, the higher the helmet weights, the less it costs.

c) The estimated regression equation is ^Yi= a + bXi

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Y[bar]= 380.35; X[bar]= 59.29

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The estimated regression equation for the price of the helmets as a function of their weight is:

^Yi= 2169.77 -30.18Xi

I hope it helps!

8 0
3 years ago
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