bittner09 bittner09
  • 03-08-2022
  • Mathematics
contestada

A random sample of 80 tires showed that the mean mileage per tire was 41,400mi, with a standard deviation of 4700mi

A random sample of 80 tires showed that the mean mileage per tire was 41400mi with a standard deviation of 4700mi class=

Respuesta :

Medunno13
Medunno13 Medunno13
  • 15-08-2022

Question 14

Part (a)

[tex]\frac{46800-41400}{4700} \approx \boxed{1.15}[/tex]

Part (b)

[tex]-2.57=\frac{x-41400}{4700} \\ \\ -2.57(4700)=x-41400 \\ \\ x=41400-2.57(4700) \\ \\ x \approx \boxed{29300}[/tex]

Answer Link

Otras preguntas

Write, Balance and Label the type of reaction: Potassium Hydroxide plus phosphoric acid yields potassium phosphate and water Help me understand this?
what is the inverse of f(x)=3x
Taxonomy seeks to _____.
realistic art is intended to show ____________________ a. something that are easily recognizable. b. objects as they appear in their natural habitat, including
two urns contain white balls and yellow balls. the first urn contains 5 white balls and 8 yellow balls and the second urn contains 9 white balls and 2 yellow b
Indicated variable in each literal equation 2p + 5r=q for p
Why are diuretics an unhealthy way to lose weight
I don't know this I need help
0.33 less than or greater than 20/60
a stock lost $56 over the last two weeks. if the stock decreased at the same rate per day, how much money did the stock lose per day?