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Maardava S

Numerade Educator

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Numerade tutor for 4 years
218 Students Helped

Maardava's Quick Ask Videos

02:47
Intro Stats / AP Statistics

62% of adults in a population have an HDTV in their home. You
randomly select 45 adults and ask them if they have an HDTV in
their home. What is the probability that at most 20 of them respond
yes? Use binomial distribution and normal distribution
approximation. Compare your results.
03:48
Intro Stats / AP Statistics

There are 28 children in a class. Among them, 14 play netball,
12 play cricket and 16 play soccer. These counts include 7 children
who play cricket and at least one other sport. All children play at
least one sport and two children play all three sports. How many
children play netball and also play soccer?
08:10
Calculus 1 / AB

y = 7x/(x-1); a = 2
Find the equation of the line tangent to the given curve at x = a. Use a graphing utility to graph the curve and the tangent line on the same set of axes.
04:18
Intro Stats / AP Statistics

Q2. Given the following GPA for 6 students: 2.80, 3.20, 3.75,
3.10, 2.95, 3.40 a) Calculate a 95% confidence interval for the
population mean GPA. b) If the confidence level is increased from
95% to 99%, will the length of the confidence interval increase,
decrease, or remain the same?
03:15
Intro Stats / AP Statistics

According to an estimate, the average earnings of female workers
who are not union members are $388 per week and those of female
workers who are union members are $505 per week. Suppose that these
average earnings are calculated based on random samples of 1500
female workers who are not union members and 2000 female workers
who are union members. Further assume that the standard deviations
for the two corresponding populations are $30 and $35,
respectively. Test at the 2.5% significance level whether the mean
weekly earnings of female workers who are not union members are
less than those of female workers who are union members.
01:29
Calculus 3

Find an example of a function f that is differentiable and
uniformly continuous
on (0, 1), but such that f ' is unbounded on (0, 1).
Note: use the f(x) = sqrt x and use sequences to show that f '
is unbounded

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