6,964 Answered Questions for the topic mathematics
A group of children were asked how many hours a day they spend watching television.
A group of children were asked how many hours a day they spend watching television. Determine the mean, mode, and median.
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Mathematics
05/31/21
Find the quadratic function that pass through (-3,0), (1,-6), (5,0)
A company considers 5 things when hiring people.
A company considers 5 things when hiring people. Each applicant gets a score from 1 – 5 and each category has a weighting from 1 – 3 in terms of importance. Below is the result of one applicant’s...
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urgent help weighted mean
How to know when to use weighted mean in a question? And could someone explain the formula, and what it means please! Thank you so much.
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Probability of Combined Events
A bag contains 22 red marbles, 15 purple marbles and a number of green marbles. A marble is randomly selected from the bag. Probability choosing red marble is 11/25. Find the number of green...
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Probability of Combimed Events
Two fair dice are tossed simultaneously. Find the probability of getting(a) prime numbers and odd numbers. (b) an even number or a number greater than 4.
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05/30/21
Please help me with quadratic equation
a) Write a quadratic equation that can be solved by factoring and does not require the use of the quadratic formula. b) Write a quadratic equation that cannot be solved by factoring...
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05/30/21
Please help me solve this variation models
Write the variation model that corresponds to each statement. a) W varies directly with x. b) A varies inversely with the square of b. c) Z varies jointly with x and y. d) ...
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What does this "Top 10" list tell us about the population of all of that country's college tuitions?
Listed below are the annual tuition amounts of the 10 most expensive colleges in a country for a recent year. What does this "Top 10" list tell us about the population of all of that country's...
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05/30/21
For a Geometric distribution with parameter p = 1/3 ,then the mean and variance are given by
Mathematics
05/30/21
Solve by substitution method, elimination method and cross multiplication method. 7x - 2 y = 3, 11x-3/2y=8
Please help on this question !!
Based on a poll, 70% of Internet users are more careful about personal information when using a public Wi-Fi hotspot. What is the probability that among four randomly selected Internet users,...
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With a short time remaining in the day, a delivery driver has time to make deliveries at 7 locations among the 9 locations remaining. How many different routes are possible?
With a short time remaining in the day, a delivery driver has time to make deliveries at 7 locations among the 9 locations remaining. How many different routes are possible?There are __ possible...
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A moving company has a truck filled for deliveries to six different sites. If the order of the deliveries is randomlyselected, what is the probability that it is the shortest route?
A moving company has a truck filled for deliveries to six different sites. If the order of the deliveries is randomlyselected, what is the probability that it is the shortest route?P(randomly...
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A presidential candidate plans to begin her campaign by visiting the capitals in 3 of 40 states. What is the probability that she selects the route of three specific capitals?
A presidential candidate plans to begin her campaign by visiting the capitals in 3 of 40 states. What is the probability that she selects the route of three specific capitals?P(she selects the...
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Find the probability of winning the jackpot.
Winning the jackpot in a particular lottery requires that you select the correct four numbers between 1 and 63 and, in a separate drawing, you must also select the correct single number between 1...
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If 5 subjects are selected from the 9 that are available, and the 5 selected subjects are all treated at the same time, how many different treatment groups are possible?
A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of healthy volunteers. For example, a phase I test of a specific drug...
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Please help me on this question!
A corporation must appoint a president, chief executive officer (CEO), chief operating officer (COO), and chief financial officer (CFO). It must also appoint a planning committee with three...
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Quadratic equation
The quadratic equation 2x²=6x+3 has roots p and q. Find the quadratic equation with the roots p2q dan pq2.
05/29/21
AP Stats Questions Pls Help!
What is the value of χ2 for the two-way table?
A/ B/ C
X
46
21
15
Y
25
32
29
Z
37
23
28
A, B, and C are supposed to be separate columns, sorry the table didn't come out...
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05/29/21
Ap Statistics Question pls Help ASAP!
Which of the statements are correct? (2 points)
A condition for using the chi-square goodness-of-fit test is that all expected counts must be at least five.
The chi-square goodness-of-fit test uses...
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Urgent Help Which type of bias is the following?
a) A survey asks,What is your favorite flower: tulip, rose, or orchid?Is this measurement bias?
Disc Maths question
Suppose you want to prove for all n⩾0 that the property P(n) given by n∑ j(j+1)/2 = n^3/6+n^2/2+n/3.j=0holds using induction on n. What should the induction step show (assuming that P(n) holds)?
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