rar79
05.05.2020 •
Mathematics
What is the vault of b in the equation (y^b)^4=1/y^24
A.-20 B.-6 C.6 D.20
Solved
Show answers
More tips
- D Dating, Love, Relationships Does a Person s Character Depend on the Color of Their Eyes?...
- O Other Childhood Fears: What Many of Us Experienced...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- L Leisure and Entertainment What to Bring on a Hike? Essential Items to Pack for a Safe and Enjoyable Adventure...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- S Style and Beauty Autotanning: Harmful or Safe?...
- F Food and Cooking 10 Ideas for a Wedding Anniversary Gift...
- H Health and Medicine How to Reduce Sweating in the Heat and Beyond: Say Goodbye to Excessive Sweat...
- F Food and Cooking Do Aphrodisiacs Really Work? Separating Fact from Fiction...
- H Health and Medicine What to Eat to Lose Weight?...
Answers on questions: Mathematics
- M Mathematics Triangle ABC will undergo two transformations to give Triangle A BC . Which pair of transformations will give a different image of Triangle ABC if the order of the transformations...
- M Mathematics You just bought two black guinea pigs, one male and one female, of the same genotype from the pet store that are known to be heterozygous (Bb). You also know that black...
- M Mathematics A football team is losing by 14 points near the end of a game. The team scores two touchdowns (worth 6 points each) before the end of the game. After each touchdown,...
- M Mathematics 6r^2 – 48r - 120 factoring quadratics...
- M Mathematics What is the product? 5(2/9/11 3/-1/5 4/-7/-3) ANSWER: A)...
- M Mathematics In 2005, it took 20.26 currency units to equal the value of 1 currency unit in 1919. In 1990, it took only 14.10 currency units to equal the value of 1 currency unit...
- M Mathematics What is the value of x...
- M Mathematics A seller has a house that is 2000 square feet. The neighborhood comps show the line of best fit to be y = 0.074x + 60.48. What is a fair price for this house? O A. $199,000...
- M Mathematics After making his first deposit, Paul has $758 in his checking account. The next month, the balance is $836. The balance after the third month is $914. more image from...
- M Mathematics If the zeros of a quadratic functions are -2 and 4, which graph could represent the function?...
Ответ:
At least 75% of the exam scores fall between 72 and 96.
Step-by-step explanation:
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is given by
.
Apply Chebychev's Theorem to the data using k=2.
k = 2, so within 2 standard deviations of the mean, interval in which at least 75% of the measures fall.
In this question:
Mean of 84, standard deviation of 6.
84 - 2*6 = 84 - 12 = 72
84 + 2*6 = 84 + 12 = 96
At least 75% of the exam scores fall between 72 and 96.