N/A - Exam Exam Answers

Which statements accurately compare the functions in the graph? Choose two correct answers.

Which statement is true?

The depth of the water, d , at the end of a pier changes periodically as a function of time, t , in hours as shown in the graph. According to the model, the last low tide occurred at 5:00 a.m. When will the next low tide occur? Let t is equal to 0 be 12:00 a.m.

In the given diagram, tangent theta is equal to square root of 3 What is the value of m ?

Assuming only positive domain values, which statement is true of the graph that represents the total cost, y , in dollars for shipping items that weigh x ounces?

Which function has the greater slope and what does it indicate?

A supervisor finds the mean number of miles that the employees in a department live from work. He finds line segment x is equal to 29 and s is equal to 3 point 6 Which mileage is within a z -score of negative 1 point 5 ?

What is the solution to 4 plus 5 e raised to the x plus 2 power is equal to 11 ?

By what approximate factor is the intensity of an earthquake with magnitude 5 point 4 greater than an earthquake with magnitude 5 point 3 ? cap m is equal to the log of open paren the fraction with numerator l and denominator l sub 0 close paren cap m is equal to the magnitude of an earthquake cap i is equal to the intensity of an earthquake cap i sub 0 is equal to the smallest seismic activity that can be measured, which is 1

What is the value of the log base 5 of 125 ?

Which survey is most likely affected by bias?

Marleny is creating a game of chance for her family. She has 5 different colored marbles in a bag: blue, red, yellow, white, and black. She decided that blue is the winning color. If a player chooses any other color, they lose 2 points. How many points should the blue marble be worth for the game to be fair?

What is the value of the log base 0 point 5 of 16 ?

Which of the following probabilities is the greatest for a standard normal distribution?

A simple random sample of 50 adults was surveyed, and it was found that the mean amount of time that they spend surfing the Internet per day is 54 point 2 minutes, with a standard deviation of 14 point 0 minutes. What is the 99 percent confidence interval open paren z - score is equal to 2 point 5 8 close paren for the number of minutes that an adult spends surfing the Internet per day? Remember, the margin of error, ME , can be determined using the formula ME is equal to the fraction with numerator z times s and denominator square root of n

What is the simplified form of the following expression? 5 square root of 8 minus square root of 18 minus 2 square root of 2

Which of the following is true regarding the solution to the logarithmic equation? log sub 2 of open paren x plus 11 close paren is equal to 4 x plus 11 is equal to 2 to the 4th power x plus 11 is equal to 16 x is equal to 5

Which step is included in the graph of the function f of x is equal to lceil x minus 1 rceil ?

David is a statistician. He has a sample size of 40 (which he cannot change). What element of his hypothesis test can he adjust to minimize the probability that he incorrectly rejects the null hypothesis?

According to a survey, 15 percent of city workers take the bus to work. Donatella randomly surveys 10 workers. What is the probability that exactly 6 workers take the bus to work? Round the answer to the nearest thousandth. cap p times k successes is equal to n cap c sub k p to the k th power open paren 1 minus p close paren raised to the n minus k power n cap c sub k is equal to the fraction with numerator n factorial and denominator open paren n minus k close paren factorial times k factorial

Which of the following shows the true solution to the logarithmic equation 3 log sub 2 2 x is equal to 3 ?

Two students created a game of dice. They determined that each roll would add the value of the die if it was an odd number. If the roll was even, it would subtract the value of the die. (For example, a roll of 2 would subtract two points, but a roll of 3 would add three points.) What is the expected value for this game?

What is the following product? open paren 5 square root of 2 minus 4 square root of 3 close paren times open paren 5 square root of 2 minus 4 square root of 3 close paren

What is the solution of open paren 4 x minus 16 close paren raised to the 1 half power is equal to 36 ?

The amount of a sample remaining after t days is given by the equation cap p times t is equal to cap A times 1 half raised to the t over h power , where cap A is the initial amount of the sample and h is the half-life, in days, of the substance. A sample contains 18 percent of its original amount of Radon- 222 The half-life of Radon- 222 is about 3 point 8 days. Which is the best estimate for the age of the sample?

What is the solution of square root of negative 4 x end root is equal to 100 ?

What is 3 pi over 4 radians converted to degrees? If necessary, round your answer to the nearest degree.

Given that tangent squared theta is equal to 3 eighths , what is the value of secant theta ?

Which set of transformations is needed to graph f of x is equal to negative 0 point 1 cosine x minus 4 from the parent cosine function?

What are the domain and range of f of x is equal to 2 times open paren 3 to the x th power close paren ?

Researchers compare the body composition of cattle feeding on a grain diet with that of cattle feeding on a grass diet. This method of gathering data is classified as

Given the function f of x is equal to 3 start absolute value x minus 2 end absolute value plus 6 , for what values of x is f of x is equal to 18 ?

What is the product? Assume x is greater than or equal to 0 open paren square root of 3 x plus square root of 5 close paren times open paren square root of 15 x plus 2 square root of 30 close paren

What is the solution of log sub 3 of open paren 3 x plus 2 close paren is equal to log sub 3 times open paren 4 x minus 6 close paren ?

The College Board states that the average math SAT score is 514 with a standard deviation of 117 Colleen gathered data from 50 students in her graduating class and found the average score to be 529 She thinks that her class’s math SAT score is different from the average. Which of the following shows the correct z -statistic for this situation?

A survey of pet owners found that on average, they spend 1 dollars comma 225 annually per pet, with a standard deviation of 275 dollars Between which two amounts would you expect 95 percent of the survey’s respondents to spend annually per pet if the sample is approximately normal and comes from a normally distributed population?

Which expression is equivalent to cosine 120 degrees ?

Omar recorded the number of hours he worked each week for a year. The random sample that he took from his data is given. 13 , 17 , 9 , 21 What is the standard deviation for the data? Standard deviation: s=sqrt(((x_1−x―)^2+(x_2−x―)^2+...+(x_n−x―)^2)/(n−1))

What are the potential solutions of the natural log of open paren x squared minus 25 close paren is equal to 0 ?

What are the domain and range of f of x is equal to start absolute value x plus 6 end absolute value ?

Which graph represents y is equal to square root of x ?

How long is the arc intersected by a central angle of 5 pi over 3 radians in a circle with a radius of 2 ft? Round your answer to the nearest tenth. Use 3 point 1 4 for pi

Which of the following is a binomial experiment?

What is the following sum? 2 times open paren cube root of 16 x cubed y close paren plus 4 times open paren cube root of 54 x to the 6th power y to the 5th power close paren

Which of the following is the inverse of y is equal to 12 to the x th power ?

The displacement, d , in millimeters of a tuning fork as a function of time, t , in seconds can be modeled with the equation d is equal to 0 point 6 sine open paren 3520 pi t close paren What is the frequency of the tuning fork?

The heights of the trees in a forest are normally distributed, with a mean of 25 meters and a standard deviation of 6 meters. What is the probability that a randomly selected tree in the forest has a height greater than or equal to 37 meters? Use the portion of the standard normal table given to help answer the question. z Probability 0 point 0 0 0 point 5 0 0 0 0 point 5 0 0 point 6 9 1 5 1 point 0 0 0 point 8 4 1 3 2 point 0 0 0 point 9 7 7 2 3 point 0 0 0 point 9 9 8 7

Why might the graph be considered misleading?

What is the domain of the function?

What is the value of secant theta given the diagram?