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Suppose a particular type of cancer has a 0.9% incidence rate. Let D be the event that a person has this type of cancer, therefore P(D)=0.009. A test for this type of cancer has a false positive rate of 6%. The test correctly confirms the presence of the cancer with an accuracy of 91%. Suppose that the test indicates that a person has cancer. What is the probability that the person actually does have cancer? Round your answer to four decimal places, if necessary
General
2 months ago
What characteristic below distinguishes a quantitative research question from a research hypothesis? Group of answer choices One is objective and the other is subjective One is a purpose of the study and the other is a question One is a question and the other is an exclamation One is a question and the other is a prediction
General
2 months ago
Please help ASAP!I'll give 50 points to whoever gives me the correct answer. And brainliest!1) Explain and/or describe each translation from y=x^2y = x 2 to y=-6\left(x+4\right)^2-7y = − 6 ( x + 4 ) 2 − 7 (there are 4).2) Explain why 8x^4 - 3x^2 + 3 is even, odd, or neither (Hint: Use Symmetry or f(-x)=f(x)).
General
2 months ago
Solve the system using substitution. Show all work
General
2 months ago
The number of telephone calls that arrive at a phone exchange is often modeled as a Poisson random variable. Assume that on the average there are 10 calls per hour. (a) What is the probability that there are exactly 5 calls in one hour? (b) What is the probability that there are 3 or fewer calls in one hour? (c) What is the probability that there are exactly 15 calls in two hours? (d) What is the probability that there are exactly 5 calls in 30 minutes?
General
2 months ago
The mean is the measure of central tendency most likely to be affected by an outlier. (A) The statement is true. (B) The statement is false. The mode is the measure of central tendency most likely to be affected by an outlier. (C) The statement is false. The median is the measure of central tendency most likely to be affected by an outlier. (D) The statement is false. Outliers do not affect any measure of central tendency.
General
2 months ago
The number N(t) of people in a community who are exposed to a particular advertisement is governed by the logistic equation. Initially, N(0) = 600, and it is observed that N(1) = 1200. Solve for N(t) if it is predicted that the limiting number of people in the community who will see the advertisement is 60,000. (Round all coefficients to four decimal places.)
General
2 months ago
Suppose that a national survey finds that 73 percent of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of a large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. (a) Formulate the null and alternative hypotheses needed to attempt to provide evidence that the percentage of work-stressed employees for the restaurant chain differs from the national percentage.
General
2 months ago
Cantwell Associates, a real estate developer, is planning to build a new apartment complex consisting of x one-bedroom units, y two-bedroom townhouses, and z three-bedroom townhouses. A total of 186 units are planned, and the number of family units (two- and three-bedroom townhouses) will equal the number of one-bedroom units. If the number of one-bedroom units will be 3 times the number of three-bedroom units, find how many units of each type will be in the complex.
General
2 months ago
A purchasing agent for a trucking company is shopping for replacement tires for their trucks from two suppliers. The suppliers’ prices are the same. However, Supplier A’s tires have an average life of 60,000 miles with a standard deviation of 10,000 miles. Supplier B’s tires have an average life of 60,000 miles with a standard deviation of 2,000 miles. Which of the following statements is true?A. the two distributions of tire life are the same.B. on average, Supplier A's tires have a longer life than Supplier B's tires.C. the life of Supplier B's tires is more predictable than the life of Supplier A's tires.D. the dispersion of Supplier A's tire life is less than the dispersion of Supplier B's tire life.
General
2 months ago
brainliest and points !! ANSWER ASAP !!( use new ideas not the ones on the internet pls) Describe a situation that models a linear pattern and then describe a situation that models a nonlinear pattern. State which situation is linear and which is nonlinear.
General
2 months ago
Two parallel lines are crossed by aWhat is the value of d?0d = 55d = 75d = 125d = 155
General
2 months ago
Two parallel lines are crossed by a transversal.Horizontal and parallel lines b and c are cut by transversal a. At the intersection of lines b and a, the bottom right angle is 50 degrees. At the intersection of lines c and a, the top left angle is y degrees.What is the value of y?y = 30y = 50y = 110y = 130
General
2 months ago
Cody worked 16 hours last week at the grocery store. His friend Sophia worked 9 less than twice the number of hours that Cody did. If Cody made $156.80 and they both make the same hourly rate, how much did Sophia make?
General
2 months ago
Carson and Jayden kept track of how many miles they ran during one week. Carson ran a total of 43 miles, which was 12 miles more than Jayden’s total. Which equation could you use to find the number of miles Jayden ran?
General
2 months ago
What are the discontinuity and zero of the function f(x) = quantity x squared plus 5 x plus 4 end quantity over quantity x plus 4?a Discontinuity at (−4, −3), zero at (−1, 0)b Discontinuity at (−4, −3), zero at (1, 0)c Discontinuity at (4, 3), zero at (−1, 0)d Discontinuity at (4, 3), zero at (1, 0)
General
2 months ago
Emma selects markers from a bag without looking at them. The bag has 8 green markers, 4 red markers, and 3 blue markers. What is the probability that she selects a red, does not replace it and then selects a blue marker.
General
2 months ago
Logan can iron 40 shirts per hour, and Sarah can iron 35 shirts per hour. Logan and Sarah worked a combined 13 hours and ironed 490 shirts. Determine the number of hours Logan worked and the number of hours Sarah worked.
General
2 months ago
What type of car is more popular among college students American or Foreign? One hundred fifty-nine college students were randomly sampled and asked which type of car they drove. A computer package was used to generate the printout below for the proportion of college students who drive American automobiles.SAMPLE PROPORTION = 0.385667SAMPLE SIZE = 159UPPER LIMIT = 0.46424LOWER LIMIT = 0.331153What proportion of the sampled students drive foreign automobiles?.385667.614333.46424.331153
General
2 months ago
Which equation is a point slope form equation for line AB ?y+2=−2(x−5)y+6=−2(x−1)y+1=−2(x−6)y+5=−2(x−2)
General
2 months ago
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