Question

a bakery owner wants to ensure they make enough cookies each day to meet the demand from customers. on average, they sell 92 cookies a day with a standard deviation of 9. the baker makes 70 cookies each day. using a calculator or a spreadsheet program, find the probability that the baker made enough cookies (no more than 70 cookies sold that day). round the answer to the nearest tenth of a percent. (1 point) the probability that 70 cookies were enough for that day’s sales is \\(\square\\)%. check answer remaining attempts : 3 spreadsheet

Explanation:

Step1: Calculate z-score

$z = \frac{X - \mu}{\sigma} = \frac{70 - 92}{9} \approx -2.44$

Step2: Find cumulative probability

Use z-table or calculator for $z=-2.44$: ~0.0073

Step3: Convert to percentage

$0.0073 \times 100 \approx 0.7\%$

Answer:

0.7