One study found that one star's worth of improvement on Yelp leads on average to an increase of between 5 and 9 percent in revenue. For a restaurant with revenue of $500,000, how much is a one star improvement worth (in additional revenue) if you use
the middle of the range, 7%?
a) $30,000
b) $35,000
c) $40,000
d) $45,000

answer: 177/8

step-by-step explanation:

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;