.Periods of College Students The senior member of understudies needs to see whether there is a critical contrast in times of occupant understudies and driving understudies. She chooses an example of 30 understudies from each gathering. The ages are appeared here. At =?0.01, choose if there is sufficient proof to dismiss the case of no distinction in the times of the two gatherings. Utilize the standard deviations from the examples and the P-esteem technique; use ?1 for the normal time of occupant understudies. Accept =?14.1 and =?25 (adjusted to one decimal spot).

Inhabitant understudies

27 26 18 19 18 30

26 18 19 32 23

19 18 29 19 22

18 22 26 19 21

23 18 20 18 22 21

Suburbanite understudies

28 25 20 24 26 30

22 21 18 20

19 26 35 19 18

19 32 29 23 21 19

36 27 20 21

(b) Compute the test esteem. Round the example intends to in any event one decimal spot and last response to two decimal spots.

z=?

(c) Find the P-esteem.

p=?

2.At age 9, the normal weight 21.3kg and the normal tallness 124.5cm for the two young men and young ladies are actually something similar. An arbitrary example of 9-year-olds yielded these outcomes.

Young men Girls

Test size 50

Mean tallness, cm 123.5 121.7

Populace difference 98 120

Gauge the mean contrast in stature among young men and young ladies with 95% certainty. Round your moderate computations to two decimal spots and last responses to one decimal spot.

?

3.Home Prices A realtor analyzes the selling costs of homes in two regions in a specific area to check whether there is a distinction. The aftereffects of the examination are appeared. Is there sufficient proof to dismiss the case that the normal expense of a home in the two areas is something similar? Use =?0.01.

City A City B

=X1$97,750 =X2$99,000

=?1$5602 =?2$4731

=n137 =n239

(b) Find the basic value(s). Round the answer(s) to in any event two decimal spots. In the event that there is more than one basic worth, separate them with commas.

Basic value(s): ?

(c) Compute the test esteem.

Utilizing the equation for the z test for looking at two methods from autonomous populaces, process the test esteem: ?

4.Professional Golfers' Earnings Two irregular examples of income of expert golf players were chosen. One example was taken from the Professional Golfers Association, and the different was taken from the Ladies Professional Golfers Association. At =?0.05, is there a distinction in the methods? The information are in large number of dollars. Utilize the basic worth strategy with tables.

PGA

446 1147 1344 5687 10,508

4910 8553 7573 375

LPGA

48 466 863 100 1876

2029 4364 2921

Track down the basic value(s). Round the answer(s) to at any rate three decimal spots. On the off chance that there is more than one basic worth, separate them with commas.

Basic value(s): ?

(c)Compute the test esteem.

t=?

5.Weights of Vacuum Cleaners Upright vacuum cleaners have either a hard body type or a delicate body type. Shown are the loads in pounds of an example of each kind. At =?0.01, would it be able to be presumed that the methods for the loads are unique? Expect the factors are regularly circulated and the differences are inconsistent.

Hard body types Soft body types

21 17 13 20 24 18 24 13

15 16 18 11 13 12

23 17 16

17 15

Use ?1 for the mean load of the hard body type.

Track down the basic value(s). Round the answer(s) to in any event three decimal spots. In the event that there is more than one basic worth, separate them with commas.

Basic value(s): ?

(c)Compute the test esteem.

t=?

6.Retention Test Scores An example of non-English majors at a chose school was utilized in an examination to check whether the understudy held more from perusing a nineteenth century novel or by watching it in DVD structure. Every understudy was doled out one novel to peruse and an alternate one to watch, and afterward they were given a 100-point composed test on every novel. Accept the factors are ordinarily conveyed. The test outcomes are appeared beneath.

Book 88 73 91 85 93 95 90 80 90

DVD 80 95 92 93 80 92 75 70 80

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At =?0.10, would it be able to be presumed that the book scores are higher than the DVD scores?

(b) Find the basic value(s). Round the answer(s) to in any event three decimal spots. On the off chance that there is more than one basic worth, separate them with commas.

Basic value(s): ?

c) Compute the test esteem.

t=?

7.Cholesterol Levels A clinical specialist wishes to check whether he can bring down the cholesterol levels through diet in 6 individuals by showing a film about the impacts of elevated cholesterol levels. The information are appeared. At =?0.10, did the cholesterol even out decline overall? Utilize the basic worth technique and tables.

Patient 1 2 3 4 5 6

Before 238 218 216 223 208 221

After 215 201 193 191 203 213

(b) Find the basic value(s). Round the response to at any rate three decimal spots. In the event that there is more than one basic worth,

separate them with commas.

Basic value(s): ?

(c) Compute the test esteem.

t=?

8.PGA Golf Scores At a new PGA competition (the Honda Classic at Palm Beach Gardens, Florida) the accompanying scores were posted for eight arbitrarily chose golf players for two sequential days. At =?0.10, is there proof of a distinction in mean scores for the two days? Expect the factors are regularly or roughly typically appropriated and use ?D for the mean on Thursday less the mean on Friday.

Golf player 1 2 3 4 5 6 7 8

Thursday 65 67 65 70 68 70

Friday 67 68 70 69 71 72 69

(b) Find the basic value(s). Round the answer(s) to three decimal spots. In the event that there is more than one basic worth, separate them with commas.

Basic value(s): ?

(c) Compute the test esteem.

t=?

9.Smoking Survey National insights show that 23% of men smoke and 18.5% of ladies do. An irregular example of 134 men showed that 29 were smokers, and of 96 ladies overviewed, 9 demonstrated that they smoked.

Develop a 95% certainty stretch for the genuine distinction in extents of male and female smokers. Use p1 for the extent of men who smoke. Round your responses to three decimal spots.

?

10.Victims of Violence An arbitrary study of 75 ladies who were casualties of brutality tracked down that 22 were assaulted by family members. An arbitrary review of 53 men tracked down that 14 were assaulted by family members. At =?0.05, would it be able to be shown that the level of ladies who were assaulted by family members is more prominent than the level of men who were assaulted by family members? Use p1 for the extent of ladies who were assaulted by family members. Utilize the basic worth strategy with tables and round all middle of the road estimations to at any rate three decimal spots.

(b)Find the basic value(s). Round the responses to two decimal spots.

Basic value(s):?

(c)Compute the test esteem.

t=?

2. List some prominent use cases of the Naive Bayesian Classifier. 3. What gives the Naive Bayesian Classifier the advantage of being computationally inexpensive? 4. Why should we use log-likelihoods rather than pure probability values in the Naive Bayesian Classifier? X1 X2 X3 Y 1 1 0 1 0 OOO 0 O O 1 O - Training Data SetConsider the set of statements given below. Decide whether each of the statements below is true. If a statement is true, decide whether this reflects a Bayesian or frequentist property of the Bayesian estimator. Note: This problem is about the Bayesian estimator that you obtained in (c). A frequentist property refers to all estimator properties that were considered before this lecture and are used in the context where there is a fixed, true, parameter value, and we want our estimator to approximate this value. On the other hand, a Bayesian property refers to properties that indicate that we weight the likelihood somehow, not just using the raw values of the likelihood. (This could involve no additional judgement on the value of the parameter, for example if we use Jeffreys prior.) Which statements are true and reflects a Bayesian property of the Bayesian estimator in (c)? The Bayesian estimator is consistent. The Bayesian estimator is unbiased. The Bayesian estimator gives in expectation a larger estimate if there are few observations, given a fixed 0, due to the nature of the prior used. The Bayesian estimator does not assume any particular prior distribution that is independent of the conditional likelihood. The Bayesian estimator is asymptotically normal. Which statements are true and reflects a frequentist property of the Bayesian estimator in (c)? The Bayesian estimator is consistent. The Bayesian estimator is unbiased. The Bayesian estimator gives in expectation a larger estimate if there are few observations, given a fixed 0, due to the nature of the prior used. The Bayesian estimator does not assume any particular prior distribution that is independent of the conditional likelihood. The Bayesian estimator is asymptotically normal.Question 4 [1 point] In choosing a potential ARIMA forecasting model for a time series data set which of the following criteria are helpful in choosing the model? |. The value of MS should be less than 1. II. The Bayesian lnforrnation Criterion {BIC} will choose a more parsimonious model than the Akaike Information Criterion {NC}. III. A necessary condition for an adequate model is that the autocorrelation and partial autocorrelation plots of the data should resemble white noise. 0 \"I only 0 None of the other choices is correct