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Unformatted text preview: 9 Long QuizZVMAIH123 x ( C I i Secute l htlpswdl5ud.edu20.orgfsluden_take_quiz_asSignmenI/displayﬂ057682ipaﬂ=1&resuts=7l627204 iii MATH123 MEB31 Long Quiz 2
Question 1 of 25 2 poms Status
in an aptitude test given to a group of 200 applicants, the average score was 75 and the standard deviation was 10 Assuming that Time “all 47 03 the scotes are normally distributed what is the orobabilitytnat a randomly selected applicant got a score between 65 and 80? 0 Pop up instructions Select the correct response,
Questions G) 05328 (9 Question ‘I I Question 2 0,1628 0 I Question 3 0 [11498 I Question 4
0 Question 5 0 0.4236  Question 6
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Question 3 0f 25 2 Points Status
The number of halfgallon cartons of milk sold daily in a convenience store is aoprommately normally disttibuted With mean : 250 Time ‘9“ 45 32 cartons and standard deviation: 25 cartons, What is probability that fewer than 240 canons of milk are sold in a given day? 0 Pop up instructions Select the correct response.
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Question 4 of 25 2 poms Status
The demand fore new product is estimated to be nom’iaiiy distributed with mean 200 and standard deviation 40, LetX be the number Time ‘Efl 46 23 of units demanded and find the probabiiity P(230 < X 4 250). 0 Pop up instructions Select the correct response,
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Question 5 of 25 2 150111“ Status
Forthe standard normei random variable Z, compute the probability P(Z < 071), Time iefl 4617 0 Pop up instructions
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Question 6 of 25 2 poms Status
The number of heifgailon cartons of miik soid daiiy in a convenience store is aoprommateiy normaily distributed With mean = 250 Time ‘Eil 46 08 cartons and standard deviation : 25 cartons. What is the probabiiity that between 225 and 275 cartons are said in given day? 0 Pop up instructions Select the correct re5pon5e,
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Question 7 of 25 2 150111“ Status
The number of heifgailon cartons of miik soid daiiy in a convenience store is aoprommateiy normaily distributed With mean = 250 Time ‘Eil 46 03 cartons and standard deviation : 25 cartons. What is the probabiiity that between 225 and 275 cartons are said in given day? 0 Pop up instructions Sei'ect the correct response,
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Long Quiz 2
Question 9 of 25 2 Polnts Status
The mean weight of 500 students at a certain cotiege is 151 lbs, and the standard deviation is 15 lbs, Assume that the weights are Time 1911 45 50 normaiiy distributed. How many students weigh more than 128 tbs? 0 Pop up instructions Select the correct response, Questions
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Questlon 10 of 25 2 Pomts status
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Question 11 of 25 2 poms Status
The demand fora new product is estimated to be nom’iaiiy distributed with mean 200 and standard deviation 40, LetX be the number Time ‘Efl 45 21 of units demanded and find the probabiiity P()< > 240). 0 Pop up instructions Select the correct response,
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Question 12 of 25 2 150111“ Status
The demand fora new product is estimated to be nom’iaiiy distributed with mean 200 and standard deviation 40, LetX be the number Time ‘Efl 4511 of units demanded and find the probabiiity PO< <150). 0 pop up mgwmions Seiect the correct response,
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Questton 13 of 25 2 Potnts Status
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A study was made on the amount of converted sugar in a certain process at various temperatures The date were coded and _ _
recorded as follows 0 POP up 'HSIVUCI'OHS
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O y : 9.321 7 0.0? O y : —9.321 + 0.07 O y = (LUTI 7 9.32 [CI] m m 1:" ‘52 r w: =5 Vﬂ MATH123 MEB31 @ E Q JniiianneBatinoo V Question 14 of 25 2 Pomts status 7 7 7 7 7 7 Time 1eft 44 50
Given are the grades of 1 0 students for pre1im and midterm period in Statistics ‘ 0 Pop up instructions here Hem" 75 70 65 90 35 35 30 70 65 90 (X) Questions Hema 3mm" 30 75 65 95 90 35 90 75 70 90 0 Question 5
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' Question 9 0 Question 10 Emma O r: D 95, strong negative corre1ation
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Pmrmm 0 none of the ChOlCeS Question I Question 13 r: 0.59, strong positive corre1ation @ Question 14 r: 0.95. strong positive corre1ation r: U no 1inear correlation OO©O r= *D 59, Strong negative oorre1ation 9 Long QuizZVMAIH123 x ( C I a Secure 1 htlpswdisud.edu20.orgfsluden_take_quiz_assignmenI/displayﬂ0576821paﬂ=15&resu115=71627204 ﬁl E MATH123 MEB31 Question 15 of 25 2 Pomts Status E E Q JhiiianneEatineo v Forthe standard normai random variable 2. compute the probability P(Z > 0 23). Time ieil 44 42 0 Pop up instructions
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Question 18 of 25 2 150111“ Status
The mean weight of 500 students at a certain cotiege is 151 lbs, and the standard deviation is 15 lbs, Assume that the weights are Time ‘Eil 4415 normaiiy distributed. How many students weigh more than 128 tbs? 0 Pop up instructions Sefect the correct response, Questions
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Questton 19 of 2.5 2 Pomts Status
_ _ _ _ _ Time left 43 36
A local college wanted to know if there is a relationship between grades in high school and grades in college of freshrnen students. _ _
Grades are recorded as the average during t e last year of him school and average during 1 e freshman year of college. 0 POP up 'HSIVUCI'OHS
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(X) 74 90 93 92 98 78 88 94 76 87 86 70 91 80 Questtons
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a m 78 95 94 94 98 a4 33 97 30 ea 39 83 81 87 , Question 11 balendar  Question 12 Determine the regression equation .
I Question 13 Select the correct response. ' QUESIIOH 14 o Question 15 O y : 0.812 + 35 0 Question 16
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O y = 35: + (1.62 a Question 18 © Question19
0 none oftne choices 0 y : (L351 l— 62 © 9 = (1.62:5 + 35 [El] m m r) ‘52 r is: =5 Vﬂ MATH123 MEB31 @ E Q Jl'iilianne Batinc: o v Question 21 Of 25 2 Potnts Status
An electrical firm manufactures light bulbs that have a life. before burnout. that is normally distributed with mean equal to 800 hours Tlme 19“ 43 21 ‘ and a standard deViation of 40 hours Find the probability that a bulb burns between 778 and 834 hours. 0 Pop up instructions news Select the correct response.
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MATH123 MEB31 @ E Q Jhilianne Batinc: o v
Question 22 of 25 2 Pomts Status nents ﬂ i3alendar nents ﬂ i3alendar Etuaents I
Portfolio in an aptitude test given to a group of 200 applicants. the average score was 75 and the standard dewation was 10 Given that the
scores are normally distributed what must be the passing score if only 60% of the applicants are needed? Select the correct response. 0 52.5
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6) Question 22 MATH123 MEB31 Question 24 of 25 2 Pomts The nurnber of halfgallon cartons of milk sold daily in a convenience store is aooroanately normally distributed With mean = 250
cartons and standard deviation: 25 cartons What is probability that fewer than 240 canons of milk are sold in a given day? Select the correct response.
0 0.6554
0 0,8554
6) 0,3446 0 0,1554 § E Q JhilianneBatineo v Status
Time left 42 55 0 Pop up instructions Questions 0 Question 1 5
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Questton 25 of 25 2 Pomts Status
in an aptitude test given to a group of 200 appiicants. the average score was 75 and the standard dewation was 10 Assuming that 71711919“ 42 48 7 . .
the scores are normaiiy distributed now manyof the appiicants got scores beiow 70, 0 pap up mgmmluns Select the correct response. Questions
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