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If a data value in a normal distribution has a negative z-score, which of the following must be true?The data value must be negative.The data value must be positive.The data value must be less than the mean.The data value must be greater than the mean.
General
4 months ago
Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB? • (-6, 0 ) • ( 0, -6 ) • ( 0, 2 ) • ( 2, 0
General
4 months ago
A cafe has a few tables that seat 6 people. There are also a few tall tables that seat 4 people. There are 7 waiters, 1 manager, and 1 cashier present in the cafe. If all the tables are full, the expression 6x + 4y + 7 + 1 + 1 gives the total number of people in the cafe where x represents the number of six-top tables and y represents the number of four-top tables. An equivalent of this expression is .
General
4 months ago
Marlow wants to know how many students in his school enjoy watching the TV news. He asks all 27 students in his art class and finds that 30% of his classmates enjoy watching the TV news. He claims that 30% of the school's student population would be expected to enjoy watching the TV news. Is Marlow making a valid inference about his population? No, it is not a valid inference because he asked all 27 students in his art class instead of taking a sample from the school No, it is not a valid inference because his classmates do not make up a random sample of the students in the neighborhood Yes, it is a valid inference because he asked all 27 students in his art class Yes, it is a valid inference because his classmates make up a random sample of the students in the school
General
4 months ago
Suppose that a travel bureau claims that the trees in a forest are 85 feet tall on average, with a standard deviation of 0.2 feet. If you took a sample of 64 trees, which of the following mean heights would be outside the 95% confidence interval?
General
4 months ago
Thomas has some leftover paint that he would like to sell. He mixes 4 3 8 gallons of blue paint with 6 1 8 gallons of white paint. Then, he pours this light-blue mixture into 1 4 gallon containers. How many of these 1 4 gallon containers can he fill completely with this paint mixture?
General
4 months ago
The figure below is a scale drawing of Quinto's bedroom. The scale used to create the drawing is 1/2 inch = 4 feet. What is the approximate area of Quinto's bedroom. p.s.use attachment to find the question for the image
General
4 months ago
What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?
General
4 months ago
Emilio attends school 180 days out of the 365 days in a year for what fraction of the year is emilio in school write it in simplest form 7/15. 1/2. 12/25. 36/73
General
4 months ago
Part A: If (7^2)^x = 1, what is the value of x? Explain your answer. (10 points)Part B: If (7^0)^x = 1, what are the possible values of x? Explain your answer. (15 points)
General
4 months ago
How many enantiomeric pairs are possible for an aldohexose?a.2b.4c.8d.16?
General
4 months ago
You are painting the prize pedestals shown (including the bottoms). You need 0.5 pint of paint to paint the red pedestal.
General
4 months ago
Solve this quadratic equation using the quadratic formula.3x 2 + 5x + 1 = 0
General
4 months ago
A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. the students believe the mean is not 8 hours. to find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night. a stemplot and boxplot of the numbers of hours are shown here. t he sample mean is 6.67 hours with a sample standard deviation of 1.88 hours.a. verify that the conditions for computing a confidence interval are met in this case.b. compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.
General
4 months ago
Cards are drawn with replacement from a standard deck until a king is drawn. does this constitute a binomial experiment? why or why not? choose the correct answer below.a. yes, because there are three independent draws. for each draw there are two outcomes (king and not king) and a constant probability of getting a king.b. no, because there is not a fixed number of trials.c. no, because there are more than two outcomes each time a card is drawn.d. no, because the probability of getting a king will change from one trial to the next.
General
4 months ago
You have base ten blocks for 2 hundreds, 2 tens, and 2 ones. Write all the different 3-digit numbers you could show.
General
4 months ago
A game is played using one die. If the die is rolled and shows 5 5, the player wins $ 10 $10. If the die shows any number other than 5 5, the player wins nothing. If there is a charge of $ 2 $2 to play the game, what is the game's expected value?
General
4 months ago
Flaming BBQ Restaurant makes a dipping sauce with 9 ml of hot sauce for every 6 ounces of barbecue sauce
General
4 months ago
If two fair dice are rolled, what is the conditional probability that the first one lands on 6 given that the sum of the dice is i? compute for all values of i between 2 and 12.
General
4 months ago
A juggler tosses a ring into the air. The height of the ring in feet above the juggler’s hands can be modeled by the function f (x) = -16 x 2 + 16x, where x is the time in seconds after the ring is tossed. Find the ring’s maximum height above the juggler’s hands and the time it takes the ring to reach this height. Then find how long the ring is in the air.
General
4 months ago
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