![ghimiren7443](/avatars/17847.jpg)
ghimiren7443
27.07.2019 •
Mathematics
Sandy is upgrading her internet service fast internet charges $60 for salvation and $50.45 per month click internet has free installation but cost 57.95 per month write an equation that can be used to find the number of months for which internet service would cost the same
Solved
Show answers
More tips
- F Family and Home Stay Warm but Don t Overheat: What is the Optimal Temperature for Your Home During Winter?...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- H Health and Medicine How to Calm Your Nerves? Expert Tips That Actually Work...
- A Animals and plants 5 Tips for Taking Care of Yews to Keep Them Green and Beautiful...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- F Family and Home Tender Care for Your Parquet: Is it Possible to Clean Parquet?...
- S Style and Beauty How Are Eyelash Extensions Applied? All Your Questions Answered...
- F Food and Cooking 10 Tips for Proper Sushi Consumption...
Answers on questions: Mathematics
- M Mathematics What is the slope, y-intercept and equation for these graphs...
- M Mathematics ⚠️How your guys day ? What you been doing? Tired of the pandemic? Free points!⚠️...
- M Mathematics A. Which is the population standard deviation of the data set: 10, 10, 10, 10, 10? 0 c. 10 b. 1 d. 5 Please select the best answer from the choices provided A B C...
- M Mathematics Which are true of the function f(x) = 49?...
- M Mathematics 8. Between 2002 and 2008, more than 26 cubic miles of groundwater has disappeared in areas of Haryana, Punjab, Rajasthan and the nation s capital territory of Delhi....
- M Mathematics A car travels a distance of 360 miles in 6 hours. What is the average speed of the car for this trip? Solve for speed....
- M Mathematics Why is math important in ur own words?...
- M Mathematics Which expressions are equivalent to 4b4b4, b ?...
- M Mathematics Clara scoops flour into a mixing bowl. Each scoop contains 34 cup of flour. Clara puts 5 scoops of flour into the mixing bowl, then transfers 13 of the flour into...
- M Mathematics At Davis you can buy 12 pounds of M&M s for $12.24 or 8 pounds for $8.24 at Smith s. Which is the better buy...
Ответ:
The probability is 0.97682
Step-by-step explanation:
We start by finding the z-values of the runner times given.
Mathematically;
z-score = (x-mean)/SD
From the question, mean = 13 seconds and SD = 0.3 seconds
So for 12.4 seconds, we have;
z = (12.4-13)/0.3 = -0.6/0.3 = -2
For 14 seconds, we have;
z = (14-13)/0.3= 1/0.3 = 3.33
So the probability we want to calculate is;
P(-2<z<3.33)
We can find this using the standard normal distribution table
Mathematically;
P(-2<z<3.33) = P(z<3.33) - P(z < -2)
Using the standard normal distribution table, the value of this is;
P(-2<z<3.33) = 0.97682