Muriel has kept track of her income and expenses for the week in the spreadsheet below. How much was Muriel’s restaurant bill? A 3-column table with 7 rows showing transaction, amounts, and totals. Beginning balance total is 380 dollars and 29 cents. Transaction amounts are Interest income 18 dollars and 10 cents, groceries negative 61 dollars and 39 cents, restaurant bill blank, paycheck 476 dollars and 24 cents, gas negative 35 dollars. Ending balance total is 735 dollars and 69 cents.
a.
$17.66
b.
$42.55
c.
$6.35
d.
$112.55

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

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;

true

step-by-step explanation:

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