Elijah Young

Numerade Educator
Teaching Assistant

Biography

I am a 3rd year Mathematics major at Anderson University and I absolutely love math. I am excited to help others learn and share in that passion.

Education

Elijah has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years
54 Students Helped

Topics Covered

Integration
Mastering Integration Techniques for Optimal Results

Elijah's Textbook Answer Videos

1

Elijah's Quick Ask Videos

04:35
Intro Stats / AP Statistics

A catalog company that receives the majority of its orders by
telephone conducted a study to determine how long customers were
willing to wait on hold before ordering a product. The wait time is
normally distributed with an average of 2.5 minutes and a standard
deviation of 0.5 minutes. What is the probability that a caller
will be assisted in more than 1.5 minutes?

Elijah Young
05:07
Intro Stats / AP Statistics

A survey reported that 49% of the respondents did not believe
the stock market will go up next year. Of the respondents who work
in finance industry, 81% believed the market will go up. Of the
people surveyed, 53% doesn't work in the finance industry. One
respondent is selected randomly. If the person selected believes
the market will go up, what is the probability that the person
works in finance? (Round your answer to 4 decimal places)

Elijah Young
10:11
Intro Stats / AP Statistics

In a statistics class, the average grade on the final examination was 75 with a standard deviation of 5. Assuming the data has a bell-shaped distribution, use the Empirical Rule to answer the following questions. (Hint: approximately 68% of the data values will be within one standard deviation of the mean; 95% of the data values will be within two standard deviations of the mean; almost all (100%) of the data values will be within three standard deviations of the mean)

a. Approximately what percentage of students received grades between 65 and 80?
b. Approximately what percentage of the students received grades greater than 85?
c. Approximately what percentage of the students received grades less than 70?
Please show work!!

Elijah Young
04:44
Intro Stats / AP Statistics

A car dealership sells both new and used cars. The number of new cars sold in a given day can be represented by a normal distribution with a mean of 10 and a standard deviation of 2. The number of used cars sold in a given day can be represented by a normal distribution with a mean of 45 and a standard deviation of 5. The number of cars sold is mutually exclusive from the number of new cars sold.
Which statistic would be used to compare new and used car sales on any given day?
a. f-statistic
b. chi-square
c. z-score
d. r-squared

Elijah Young
05:24
Intro Stats / AP Statistics

There are two major tests of readiness for college: the ACT and
the SAT. ACT scores are reported on a scale from 1 to 36. The
distribution of ACT scores in recent years has been roughly Normal
with mean µ = 20.9 and standard
deviation s = 4.8. SAT scores are reported on a
scale from 400 to 1600. SAT scores have been roughly Normal with
mean µ = 1026 and standard
deviation s = 209.
Joe scores 1246 on the SAT. Assuming that both tests measure the
same thing, what score (±1) on the ACT is equivalent to Joe's SAT
score?

Elijah Young
06:20
Intro Stats / AP Statistics

Heart Rates
For a certain group of individuals, the average heart rate is 71 beats per minute. Assume the variable is normally distributed and the standard deviation is 3 beats per minute. If a subject is selected at random, find the probability that the person has the following heart rate. Use a graphing calculator. Round the answers to four decimal places.

Part 1 of 3
Between 67 and 73 beats per minute.
P(67 < X < 73) = 0.6593

Part 2 of 3
Higher than 69 beats per minute.
P(X > 69) = 0.7475

Part 3 of 3
Less than 74 beats per minute.
P(X < 74) = ?

Elijah Young
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