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The correct answer is the third one
Answer:
Step 3
Step-by-step explanation:
He added -6 and 8 when he should've multiplied following pemdas
( multiplied the 8 and 7 )
Answer:
0.9256
Step-by-step explanation:
Given that a convenience store owner claims that 55% of the people buying from her store, on a certain day of the week, buy coffee during their visit
Let X be the number of customers who buy from her store, on a certain day of the week, buy coffee during their visit
X is Binomial (35, 0.55)
since each customer is independent of the other and there are two outcomes.
By approximation to normal we find that both np and nq are >5.
So X can be approximated to normal with mean = np = 19.25
and std dev = 
Required probability = prob that fewer than 24 customers in the sample buy coffee during their visit on that certain day of the week
=
(after effecting continuity correction)
= 0.9256
Answer: super sorry! i have no idea but im sure someone else knows (:
Step-by-step explanation:
sorry
Answer:
<u><em>7 hours 30 minutes and 0 Seconds</em></u>
Step-by-step explanation:
- <em>60 minutes in 1 hour</em>
- <em>7:30 - 3:00</em>
- <em>60 * 10 = 600 Seconds</em>
- <em>Plus the 30 minutes which converts to 20 seconds</em>
- <em>Change that into hours and minutes</em>