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which ordered pairs are Solutions to the inequality y-3x<-8? Select each correct answer. (5,4)(0,-9)(-3,-2)(2,-1)(1,-5)
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2 months ago
Results from previous studies showed 79% of all high school seniors from a certain city plan to attend college after graduation. A random sample of 200 high school seniors from this city reveals that 162 plan to attend college. Does this indicate that the percentage has increased from that of previous studies? Test at the 5% level of significance. Compute the z or t value of the sample test statistic
General
2 months ago
5. what’s the transformations change the graph of f(x) to the graph of g(x)? f(x)=x^2 g(x)=(x+3)^2-7A) the graph of g is the graph of f translated the the right 3 units and up 7 units. B) the graph of g is the graph f translated to the left 3 units and down 7 units. C) the graph of g is the graph f translated up 3 units and the the left 7 units D) the graph of g is the graph f translated down 3 units and to the right 7 units.
General
2 months ago
The line of best fit passes through the two points labelled on this graph.Find the equation of the line of best fit
General
2 months ago
An assembly consists of three mechanical components. Suppose that the probabilities that the first, second, and third components meet specifications are 0.95, 0.98, and 0.99, respectively. Assume that the components are independent. Determine the probability mass function of the number of components in the assembly that meet specifications. 3.1.18 The distribution of the time until a Web
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2 months ago
Rewrite the improper fractions as mixed numbers. 1. 19/5. 2. 38/6. 3. 73/8 please help i am confused and please show work
General
2 months ago
Urn I contains three red chips and five white chips; urn II contains four red sand four whites; urn III contains five red sand three whites. One urn is chosen at random and one chip is drawn from that urn. Given that the chip drawn was red, what is theprobability that III was the urn sampled?
General
2 months ago
Using traditional methods, it takes 99 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique with 80 students and observed that they had a mean of 100 hours. Assume the variance is known to be 25. A level of significance of 0.05 will be used to determine if the technique performs differently than the traditional method. Is there sufficient evidence to support the claim that the technique performs differently than the traditional method?
General
2 months ago
Which statements are true about the location of 5.25 on the number line? Check all that apply.1.55.25 should be plotted between 4.5 and 6.0.5.25 should be plotted between 4.75 and 5.0.5.25 is closer to 6.0 than to 5.0.5.25 is the same distance from 5.0 as from 5.5.5.25 is the same distance from 4.5 as from 6.0.
General
2 months ago
lousia's saving change by -59 each time she goes bowling. In all, it changed by-$99 during the summer. How many times did she go bowling in the summer?
General
2 months ago
In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered.Downtown Store North Mall StoreSample size 25 20Sample mean $9 $8Sample standard deviation $2 $1A 95% interval estimate for the difference between the two population means is1.09 to 4.080.07 to 1.91.08 to 2.921.9 to 2.08
General
2 months ago
In April and May of 2011, the Pew Research Center surveyed cell phone users about voice calls and text messaging. They surveyed a random sample of 1914 cell phone users. 75% of the sample use text messaging.The 95% confidence interval is (73.1%, 76.9%). Which of the following is an appropriate interpretation of the 95% confidence interval? A. There is a 95% probability that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.B. We can be 95% confident that the proportion of the sample who use text messaging is between 73.1% and 76.9%.C. 95% of samples will have between 73.1% and 76.9% of respondents who use text messaging.D. We can be 95% confident that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.
General
2 months ago
It takes a passenger train 5 hr less time than it takes a freight train to make the trip from Picture Rock to RockvilleThe passenger train averages 78 km/h, while the freight train averages 52 km/h. Find the distance fromPicture Rock toRockville
General
2 months ago
3IESERBECEREBRERO1SELESELSREREFUCESEESLIFESUBE31IN128STEESEESESSESETESISTERS11TERSEN21LESSISTEETSCSESSEEEEEEEEEEESTERSSPOENITEDELECTEESEE180SITESSESSEEEEESETESSEREESSERESERRESESSERE08FEEESSEB) 6D) S2x - 10SESSESETTEISTEETTESTESISESEISEPSE1256STESSESESSE-SSSSSSSSSSSSEEEEEESTEELEESSSSSSSSSSSRETETTELEESENESTEELECTISSUESS SSSSEEEEEEEEEEEEEEE2014SISESESSEEEEEEEEE22STEETSEETETESSTTEESSSSSSSTELEFONEEESTEEEEEEEEEEEEEEEESTSEEEEEEPIEEEPEDERSENESSEFESSESTEESEESEEEELEESESSERELESELEEEEEEEEEESSESESSESE2TETESIEEE86PRESERCEEREEE8023ESSELESSEEEEEEEEEEE98584318SEEA) 9C) 10.
General
2 months ago
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99 % confidence assuming s equals 12.2 based on earlier studies? Suppose the doctor would be content with 90 % confidence. How does the decrease in confidence affect the sample size required?LOADING... Click the icon to view a partial table of critical values.A 99% confidence level requires nothing subjects. (Round up to the nearest subject.)
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2 months ago
Subtract (7x-2) - (3x-5)
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2 months ago
42 was divided by some number, then added to 11 next this sum was multiplied by 5, which gave a product of 125. Find this number.
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2 months ago
The average time taken to complete an exam, X, follows a normal probability distribution with mean = 60 minutes and standard deviation 30 minutes.What is the probability that a randomly chosen student will take more than 30 minutes to complete the exam?Select one:a. 0.9772b. 0.8413c. 0.5d. 0.1587
General
2 months ago
In 2010, the Census Bureau estimated the proportion of all Americans who own their homes to be 0.669. An urban economist wants to estimate the current (2016) proportion of all Americans who own their homes i. Making use of the Census Bureau estimate as a starting point, what sample size does she need to be 90% confident AND have the estimate within 0.02 of the true proportion? SHOW YOUR WORK. If she ignores the Census Bureau estimate, what sample size does she need to be 90% confident AND have the estimate within 0.02 of the true proportion? SHOW YOUR WORK. ii. B. A researcher wants to estimate the mean hours per week that Americans spend watching television. He has read an article about a survey conducted in 2014 that had s = 7.5 hours per week spent watching television. → What sample size does he need to estimate the population mean within 2 hours per week with 95% confidence? SHOW YOUR WORK.
General
2 months ago
graph the following function and identify any shifts, stretches, and symmetry and x and y intercepts:y = f(x) = (x - 3)^2 + 2
General
2 months ago
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