![xojade](/avatars/20696.jpg)
xojade
27.01.2020 •
Mathematics
Ihave 9 more questions i will be posting nd i really need to get this done and i will in any way i can , you!
Solved
Show answers
More tips
- S Sport Where can you play football in Moscow?...
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- A Animals and plants 5 Tips for Taking Care of Yews to Keep Them Green and Beautiful...
- H Health and Medicine How to Calm Your Nerves? Expert Tips That Actually Work...
- O Other What is a Disk Emulsifier and How Does it Work?...
- S Sport How to Pump Your Chest Muscle? Secrets of Training...
- C Computers and Internet How to Get Rid of 3pic Infector: Everything You Need to Know...
- S Style and Beauty How to Grow Hair Faster: Real Methods and Advice...
- C Computers and Internet How to Top Up Your Skype Account Without Losing Money?...
Answers on questions: Mathematics
- M Mathematics I need help with this math problem please ?...
- M Mathematics The base of a parallelogram is twice is breath. if the area of the parallelogram is 200cm².Find the perimeter of a parallelogram...
- B Biology Predict the creatures’ hemolymph concentrations when the salt solution is 625 mOsm...
- M Mathematics I^22 can someone please help...
- H History The leaders of which three countries were known as the big three during world war ii? a. germany, italy, and japan b. united states, united kingdom, and soviet union...
Ответ:
Ответ:
No, the manager is not correct based on the 95% confidence interval.
Step-by-step explanation:
We are given that the average daily revenue over the past five-week period has been $1,080 with a standard deviation of $260, i.e.; X bar = $1080 and s = $260 and sample size, n = 35 .
The Pivotal quantity for 95% confidence interval is given by;
where, X bar = sample mean = $1080
s = sample standard deviation = $260
n = sample size = 35 {five-week}
So, 95% confidence interval for average daily revenue,
is given by;
P(-2.032 <
< 2.032) = 0.95
P(-2.032 <
< 2.032) = 0.95
P(-2.032 *
<
< 2.032 *
) = 0.95
P(X bar - 2.032 *
<
< X bar + 2.032 *
) = 0.95
95% confidence interval for
= [ X bar - 2.032 *
, X bar + 2.032 *
]
= [ 1080 - 2.032 *
, 1080 + 2.032 *
]
= [ 990.70 , 1169.30 ]
No, the manager is not correct based on the fact that the coffee and pastry strategy would lead to an average daily revenue of $1,200 because the calculate 95% confidence interval does not include value of $1200.
Therefore, the store manager believe is not correct.