198 Answered Questions for the topic Test Preparation

Test Preparation Math Calculus Trigonometry

06/16/21

Given the vertices of a triangle PQR, P (3, -2, 7), Q (2, 2, -3) and R (1, 1, 2), define the coordinate of point S that will create a right isosceles triangle with right angle at P.

The hints given are: Use point Q as one of the corners. Point P will be the vertex/90 degree angle corner. The magnitude of PS and PQ should be perpendicular and have the same magnitude. --I have... more
Test Preparation Math Calculus Vectors

06/15/21

I need help with 2 calc-related-questions.

Determine the value of k such that u and v are orthogonal. u = [2, k, -1] and v = [3, -2, 7] Determine the value(s) of k such that (2k, 3, k+1) x (k-1, k, 1 = (1, -2, 2) The x stands as a tip to... more
Test Preparation Series 63

05/19/21

How many hours should you study for the Series 63 ?

Most people spend at least 40 hours studying for the 63. The best practice is to spread out those hours over at least 10 days. Companies usually give about 2 months to study and take the exam.... more

05/12/21

The null hypothesis (H0) should always be equal to something?

True orFalse
Test Preparation Grammar Spanish Homework

05/12/21

Por vs. Para - Show me new ways of learning?

04/20/21

Complaints about poor service led the Department of Motor Vehicles to investigate wait times at a local branch.

Complaints about poor service led the Department of Motor Vehicles to investigate wait times at a local branch. During one week, DMV employees randomly asked 50 people leaving this branch how long... more

04/20/21

A random sample of size 975 is drawn from a large population. The population standard deviation is 18.

A random sample of size 975 is drawn from a large population. The population standard deviation is 18. The sample mean is 69.2. Find a 99% confidence interval for the population mean, 𝜇.(a) 66.7... more

04/20/21

Help me please! Urgent! TV network executives are planning their coverage of the next Summer Olympics.

TV network executives are planning their coverage of the next Summer Olympics. They randomly selected 675 people and asked them to name their favorite discipline in the Summer Olympics. In this... more

04/05/21

Finding new customers An online retailer wants to estimate p = the proportion of all orders in a given week that are from new customers.

Finding new customers An online retailer wants to estimate p = the proportion of all orders in a given week that are from new customers. He takes an SRS of 40 orders and finds that 12 of them are... more

04/05/21

Finding z, Use Table A or technology to find the critical value z* for a 99.9% confidence interval.

Finding z, Use Table A or technology to find the critical value z* for a 99.9% confidence interval.{A} 3.339{B} 2.392{C} 3.291{D} none of the above

04/05/21

Finding z, Use Table A or technology to find the critical value z* for a 93% confidence interval.

 Finding z* Use Table A or technology to find the critical value z* for a 93% confidence interval. Assume that the Large Counts condition is met.[a] 2.282[b] 1.812[c] 0.812[d] none of the above

03/31/21

SUPER URGENT. Each year, the high school guidance counselors conduct a survey to estimate proportion...

each year, the high school guidance counselors conduct a survey to estimate the proportion of students at the school who cheat on their homework. Based on a random sample of 300 students from the... more

03/31/21

A health magazine reported that 27% of adult males smoke cigarettes.

A health magazine reported that 27% of adult meals smoke cigarettes. A competing magazine thinks this claim is false. To test this claim, they select 40 adult meals at random and record if they... more
Test Preparation Statistics Sat Math Probability

03/11/21

At a garden center where she works, joy recently stopped a wide....

At the garden center where she works, Joy recently stocked a wide selection of herb plants; 17 sage, 24 basil, one cilantro, 7 thyme, and 9 Rosemary. What is the experimental probability that the... more
Test Preparation Math

03/11/21

write slope intercept formof the equation that goes through the point (4,5) and is perpendicular to the line given by the equation y=-4/7x-3

write slope intercept form of the equation that goes through the point (4,5) and is perpendicular to the line given by the equation y=-4/7x-3
Test Preparation Geometry Statistics Sat Math

03/10/21

Which Z values correspond to the outside 80% of the standard normal distribution?

(A) -.26 < z < .26(B) -1 < z < 1(C) -.2533 < z < .2533(D) -.5 < z < .5
Test Preparation Geometry Statistics Sat Math

03/10/21

Please help me, I really dont know the answer.

X is a normally distributed random variable with mean 85 and standard deviation 17. What is the probability that X is less than 55? (A) .0338(B) .0388(C) .0038(D) .3888
Test Preparation Geometry Statistics Sat Math

03/10/21

Please help. I’ve already spent 10mins trying to answer this.

X is a normally distributed random variable with mean 61 and standard deviation 23. What is the probability that X is between 43 and 79?(A) 56.61%(B) 50.65%(C) 46.41%(D) 50.41%
Test Preparation Geometry Statistics Sat Math

03/10/21

This is an urgent question!

X is a normally distributed random variable with mean 60 and standard deviation 22. What is the probability that X is between 25 and 95? (A) 88.84%(B) 68.44% (C) 78.44%(D) 78.84% (E) All is... more
Test Preparation Geometry Statistics Algebra

03/10/21

The probability a person is infected by certain cold virus is 0.2.

If a random sample of 12 people is taken, what is the probability that at least one person will be infected by the cold virus?(A) 0.2062(B) 0.9313(C) 0.2400(D) 0.0687

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