Question
In: Statistics and Probability
Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore, and recorded number of...
Statistics students in Oxnard College sampled 10 textbooks in
the Condor bookstore, and recorded number of pages in each textbook
and its cost. The bivariate data is shown below,
| Number of Pages (xx) | Cost(yy) |
|---|---|
| 526 | 52.08 |
| 625 | 59 |
| 589 | 56.12 |
| 409 | 25.72 |
| 489 | 34.12 |
| 500 | 53 |
| 906 | 78.48 |
| 251 | 26.08 |
| 595 | 50.6 |
| 719 | 68.52 |
A student calculates a linear model
yy = xx + . (Please show your answers to two decimal
places)
Use the model above to estimate the cost when
number of pages is 563
Cost = $ (Please show your answer to 2 decimal places.)
Solutions
Expert Solution
Run a regression analysis in excel followed by below procedures:
1. Go to data tab --> data analysis --> choose
Regression
Summary output:
Linear model Equation:
yy = = 0.09xx - 0.85
Use the model above to estimate the cost when number of pages is 563
yy = = 0.09xx - 0.85
x = 563
yy = 0.09*(563) - 0.85
yy = 49.82
estimate the cost when number of pages is 563 = 49.82
orchestra answered 1 year agoRelated Solutions
Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number...
Statistics students in Oxnard College sampled 9 textbooks in the
Condor bookstore and recorded the number of pages in each textbook
and its cost. The bivariate data are shown below:
Number of Pages (xx)
Cost(yy)
470
65.4
980
135.6
300
53
888
117.56
982
128.84
762
110.44
267
41.04
571
88.52
640
91.8
A student calculates a linear model
yy = xx + . (Please show your answers to two decimal
places)
Use the model to estimate the cost when number...
Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number...
Statistics students in Oxnard College sampled 11 textbooks in
the Condor bookstore and recorded the number of pages in each
textbook and its cost. The bivariate data are shown
below:
Number of Pages (xx)
Cost(yy)
446
60.9
909
134.35
430
67.5
628
93.2
475
67.25
504
69.6
875
140.25
296
41.4
214
45.1
884
135.6
655
106.25
A student calculates a linear model
y = x ___ + ____. (Please show your answers to two
decimal places)
Use the model to...
Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number...
Statistics students in Oxnard College sampled 11 textbooks in
the Condor bookstore and recorded the number of pages in each
textbook and its cost. The bivariate data are shown
below:
Number of Pages (xx)
Cost(yy)
761
66.27
855
57.85
681
60.67
658
42.06
218
24.26
587
44.09
973
72.11
925
68.75
672
45.04
426
28.82
243
28.01
A student calculates a linear model
yy = xx + . (Please show your answers to two decimal
places)
Use the model to estimate...
22 Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore, and recorded number...
22
Statistics students in Oxnard College sampled 11 textbooks in
the Condor bookstore, and recorded number of pages in each textbook
and its cost. The bivariate data is shown below,
Number of Pages (xx)
Cost(yy)
513
65.43
323
34.53
751
87.61
619
70.09
671
80.81
914
101.54
310
44.1
321
51.31
243
45.73
496
63.56
528
59.08
A student calculates a linear model
yy = xx + . (Please show your answers to two decimal
places)
Use the model above to...
The college bookstore tells prospective students that the average cost of its textbooks is $52 with...
The college bookstore tells prospective students that the
average cost of its textbooks is $52 with a σ of $4.50. A group of
smart statistics students think that the average cost is much
higher. In order to test the bookstore’s claim against their
alternative, the students select a random sample of size 100.
Assume that the mean from their random sample is $52.80. Use alpha
value of 0.05 level to test the hypothesis.
The college bookstore tells prospective students that the average cost of its textbooks is $52 with...
The college bookstore tells prospective students that the
average cost of its textbooks is $52 with a standard deviation of
$4.50. A group of smart statistics students thinks that the average
cost is higher. In order to test the bookstore’s claim against
their alternative, the students will select a random sample of size
100. Assume that the mean from their random sample is $52.80. Test
at 10% significance level.
--> Perform a hypothesis test and state your decision.
The college bookstore tells prospective students that the average cost of its textbooks is $108 with...
The college bookstore tells prospective students that the
average cost of its textbooks is $108 with a standard deviation of
$4.50. A group of smart statistics students thinks that the average
cost is higher. In order to test the bookstore’s claim against
their alternative, the students will select a random sample of size
100. Assume that the mean from their random sample is $112.80.
Perform a hypothesis test (using R) at the 5% level of
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6. The college bookstore tells prospective students that the average cost of its textbooks is $42...
6. The college bookstore tells prospective students that the
average cost of its textbooks is $42 with a standard deviation of
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cost is higher. In order to test the bookstore’s claim against
their alternative, the students will select a random sample of size
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In our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affortable breakfast...
In our Condor Cafe, the Oxnard College Culinary Program offers
the most delicious and affortable breakfast and lunch choices among
the 152 Community Colleges in California. This week, a random
sample of 386 orders were recorded, and 242 orders were for the
$5-meals. Please find the 99% confidence interval for the true
proportion of the orders for the $5-meals. Enter your answer as an
open-interval (i.e., parentheses) using decimals (not percents)
accurate to three decimal places. Confidence interval = Express...
In our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affortable breakfast...
In our Condor Cafe, the Oxnard College Culinary Program offers
the most delicious and affortable breakfast and lunch choices among
the 152 Community Colleges in California. This week, a random
sample of 186 orders were recorded, and 57 orders were for the
$5-meals. Please find the 99.9% confidence interval for the true
proportion of the orders for the $5-meals.
A. Enter your answer as an open-interval
(i.e., parentheses) using decimals (not percents) accurate
to three decimal places.
Confidence interval =...
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