irenemonte
01.02.2021 •
Mathematics
$15 an hour plus a $20 fee to cover gas money and snacks. Andre charges $10 an hour, but a $40 fee. For how many hours will Jada’s service be cheaper than Andre’s
Solved
Show answers
More tips
- F Food and Cooking How to Cook Spaghetti Right – Secrets and Tips...
- P Philosophy Personal attitude towards Confession: how to prepare and undergo the procedure correctly?...
- H Health and Medicine Flu: How to Recognize It by the First Symptoms?...
- F Food and Cooking How to Sober Up Quickly? Important Facts and Tips...
- H Health and Medicine How to Properly Take a Blood Sugar Test?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics Calcular el valor de x de cada figura utilizando utilizando las razones trigonométricas Ayudaaaaa...
- M Mathematics In the following diagram, triangle ABC is drawn such that point D lies on side BC and point E lies on side AC. Read the givens below and then state all conclusions you can draw...
- M Mathematics I need help with #2 and #4 with work please...
- H History What do you know about how Vietnam affected the United States as a superpower?...
- G Geography Look at the image and create a caption or story that goes along with it, just like you would see in a comic book. It will be helpful to look at the entire assignment first, so...
- B Business There are many food carts near mark’s university. mark and his friends regularly buy hot dogs from jeff’s cart. recently, andrea opened a business selling two-for-one hamburgers...
- B Biology Which process could be represented by the picture to the right? Mitosis, meiosis, fertilization, or pollination? Which cells are produced by meiosis? nerve cells, skin cells,...
Ответ:
The empirical rule states for a normal distribution:
68% of the data are within ± 1 standard deviation from the mean
95% of the data are within ± 2 standard deviations from the mean
99.7% of the data are within ± 3 standard deviations from the mean
A normal distribution is also symmetric around its mean. Since that's the case, 34% (1/2 of 68) would be within +1 standard deviation from the mean and 34% would be within -1 standard deviation from the mean
This problem asks what is the percentage between 53 and 65 when the mean is 62 and the standard deviation is 3. Putting this in terms of the mean and standard deviations, this problem asks what is the percentage between -3 and + 1 standard deviations?
The percentage between the mean and -3 standard deviations is 49.85% (this is one half of 99.7%)
The percentage between the mean and +1 standard deviations is 34% (one half of 68%)
Add those two together to get your total percentage