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During a 5 km walk to raise money for the school band, Tabitha walked at a pace of 0.08 of a kilometer per minute. Using 1 mi = 1.61 km, what was Tabitha's approximate pace in miles per hour?
General
4 months ago
HELP PLZ ASAP I WILL GIVE BRAINLIEST ANSWER PLZZZZZ
General
4 months ago
Write an equation of a parabola that opens downward, has a vertex at the origin, and a focus at (0, –1).
General
4 months ago
Which of the following scenarios models the equation y=2x+5?There are initially 5 chickens on the farm. Each month thereafter the number of chickens is 2 times the number in the month before.Nina earns $2.00 for each Enjoy the City book she sells. Each time she sells a book she also gets a five-dollar tip.The temperature at 8:00 AM is 5 degrees Celsius and increases 2 degrees per hour.
General
4 months ago
In a large city, 6060% of people pass the drivers' road test. suppose that every day, 300300 people independently take the test. complete parts (a) through (d) below.a. what is the number of people who are expected to pass? the expected number is 180180. (round to the nearest whole number as needed.)b. what is the standard deviation for the number expected to pass? the standard deviation is nothing. (round to the nearest whole number as needed.)c. after a great many days, according to the empirical rule, on about 95% of these days, the number of people passing will be as low as _____ and as high as _____. (hint: find two standard deviations below and two standard deviations above the mean.) after a great many days, according to the empirical rule, on about 95% of these days, the number of people passing will be as low as nothing and as high as nothing. (round to the nearest whole number as needed.)d. if you found that one day, 134134 out of 300300 passed the test, would you consider this to be a very lowlow number? ▼ yes, no, because 134134 is ▼ less than 1 standard deviation between 1 and 2 standard deviations between 2 and 3 standard deviations more than 3 standard deviations belowbelow the mean.
General
4 months ago
A check of dorm rooms on a large college campus revealed that 38% had refrigerators, 52% had tvs, and 21% had both a tv and a refrigerator. what's the probability that a randomly selected dorm room hasa.a tv but no refrigerator?b.a tv or a refrigerator, but not both?c.neither a tv nor a refrigerator?
General
4 months ago
The length of the rectangle garden is three feet less than twice its width. If the perimeter of the garden is 42 feet, what is its length? ( 10marks)
General
4 months ago
In your stor 155 class, the professor returns midterm 2 and claims that the average score was 83 out of 100 with a standard deviation of 8 points. when the professor steps out of the room, you quickly select a simple random sample of students (all students are present that day) and note their scores: 68, 75, 88, 79, 78, 79, 65, 77, 85, 71a.you strongly suspect that the professor is overstating the average so that students will blame themselves if they have a low midterm score. state the null and alternative hypotheses for the appropriate test of significance at α=0.05.
General
4 months ago
Mark is training for a mini triathlon. He rode his bike 3/4 mile, ran 5/6 mile, and swam 10/12 mile each day for 7 days . What combined distance did Mark exercise during the week?
General
4 months ago
Here are summary statistics for randomly selected weights of newborn girls: nequals161, x overbarequals32.8 hg, sequals7.2 hg. construct a confidence interval estimate of the mean. use a 90% confidence level. are these results very different from the confidence interval 31.7 hgless thanmuless than34.5 hg with only 12 sample values, x overbarequals33.1 hg, and sequals2.7 hg? what is the confidence interval for the population mean mu? 31.6 hgless thanmuless than 34.6 hg (round to one decimal place as needed.)
General
4 months ago
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