You notice that the sticker of a 2014ford explorer states that it gets 18 miles per gallon city driving. a random sample of 30 2014ford explorers had the following miles per gallon per city driving. 19.318.1 17.317.3 18.519.3 15.816.4 18.216.4 16.418.0 16.717.6 18.118.6 17.717.6 17.318.6 15.616.915.516.0 18.217.9 16.218.4 17.417.0 is there sufficient statistical evidence to conclude that2014ford explorers get less than 18 miles per gallon city driving? explain your answer. hint: think, calculate the p value

2nd one in the first row is correct

ans789

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: