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loris [4]
2 years ago
13

Jim was thinking of a number. Jim halves the number and gets an answer of 61.2. Form an equation with

Mathematics
1 answer:
ioda2 years ago
3 0

Answer:

X/2 = 61.2

X=122.4

Step-by-step explanation:

Ok so we know that a number was halved so we can use x and equaled to 61.2 so we can do x/2 = 61.2

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Use the data in LAWSCH85 for this exercise. (i) Using the same model as in Problem 4 in Chapter 3, state and test the null hypot
natka813 [3]

Answer:

Step-by-step explanation:

In the model

Log (salary) = B0 + B1LSAT +B2GPA +B3log(libvol) +B4log(cost)+B5 rank+u

The hypothesis that rank has no effect on log (salary) is H0:B5 = 0. The estimated equation (now with standard errors) is

               Log (salary) =    8.34 +    .0047 LSAT +   .248 GPA +   .095 log(libvol)

                                        (0.53)     (.0040)              (.090)            (.033)

                                         +     .038 log(cost)    – .0033 rank

                                              (.032)                    (.0003)

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The t statistic on rank is –11(i.e. 0.0033/0.0003), which is very significant. If rank decreases by 10 (which is a move up for a law school), median starting salary is predicted to increase by about 3.3%.

(ii) LSAT is not statistically significant (t statistic ≈1.18) but GPA is very significance (t statistic  ≈2.76). The test for joint significance is moot given that GPA is so significant, but for completeness the F statistic is about 9.95 (with 2 and 130 df) and p-value ≈.0001.

6 0
3 years ago
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weeeeeb [17]

Answer:

no

Step-by-step explanation:

75:3=25:1

140:4=45:1

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Step-by-step explanation:

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