Level of Mathematical Skills and the School Last Attended of Senior Hig School Students Level of Mathematical Skills Approaching Developing Beginning Total Proficiency (80-84) (75-79) (74 and below) 10 173 192 2 2 1 5 12 11 174 197 School Last Attended Public Private Total
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A: Given p.m.f. is f(x)=13 x=-1,0,1 =0 otherwise
solve using chi squared test
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- A chi square test for homogeneity applies to: Select one: a. data from a single random sample where the sample is classified by values of three or more categorical variables. b. data from samples from two or more populations where each sample is classified by values of two categorical variables. c. data from samples from two or more populations where each sample is classified by values of a single categorical variable. d. data from a single random sample where the sample is classified by values of two categorical variables.A new drug is released to market and it has been determined that the drug is responsible for causing hypertension among those individuals who take the drug. If 30,276 individuals were prescribed the drug in its first year on the market and 17,620 individuals developed hypertension, what is the point prevalence of hypertension among those individuals prescribed the drug, after the drug’s first year on the market? 0.00582 0.05820 0.58200 5.82000Albone Age(Rings) Shell Weight(g) 10 0.205 11 0.285 9 0.09 10 0.16 8 0.135 11 0.285 12 0.26 12 0.345 10 0.165 17 0.41 11 0.2425 13 0.34 12 0.62 10 0.3 12 0.245 13 0.31 11 0.18 12 0.125 9 0.07 11 0.26 15 0.45 10 0.205 9 0.075 19 0.345 7 0.08 13 0.33 22 0.27 12 0.35 10 0.25 10 0.105 10 0.2 20 0.4 18 0.385 19 0.285 11 0.24 17 0.625 17 0.3 17 0.37 15 0.365 3 0.01 9 0.11 8 0.027 13 0.22 20 0.415 11 0.2 12 0.36 4 0.012 15 0.14 6 0.055 5 0.025 12 0.09 12 0.245 11 0.295 9 0.123 7 0.03 13 0.255 8 0.06 20 0.525 9 0.07 13 0.3 12 0.256 6 0.03 7 0.0745 9 0.1465 9 0.202 10 0.33 11 0.3685 10 0.4 6 0.0245 5 0.045 6 0.1 7 0.119 6 0.17 8 0.156 8 0.202 7 0.214 9 0.274 9 0.315 8 0.336 11 0.4005 4 0.0095 6 0.0405 7 0.1045 7 0.1175 6 0.1385 9 0.169 8 0.206 8 0.265 9 0.292 9 0.332 8 0.34 11 0.4525 11 0.586 7 0.048 7…
- Are you an impulse shopper? A survey of 1000 grocery shoppers indicated that 24% of males and 57%of females make an impulse purchase every time they shop. Assume that the survey consisted of 500 males and 500 females. Complete parts (a) and (b) below. Question content area bottom Part 1 a. At the 0.01 level of significance, is there evidence of a difference in the proportion of males and females who make an impulse purchase every time they shop? Let group 1 be the males, and let group 2 be the females. State the null and alternative hypotheses. Choose the correct answer below. A. H0:π1≥π2 H1:π1<π2 BH0:π1≠π2 H1:π1=π2 C.H0:π1≤π2 H1:π1>π2 D.H0:π1=π2 H1:π1≠π2 E.H0:π1<π2 H1:π1≥π2 F.H0:π1>π2 H1:π1≤π2 Part 2 Calculate the test statistic. χ2STAT= (Round to three decimal places as needed.) Part 3 Determine the critical value. The critical value is - (Round to three decimal places as needed.) Part 4 State…An educator wishes to determine whether there is a difference in the favorite subjects selected by males and females in college A random sample of males and females provides the data given in the tableAto. educator conclude that subject selection independent of the gender of the Ston all to Hypthesisa. In the analysis of a scatterplot, the element/s that should be considereddirectionstrength of correlationboth direction and relationshipnone of theseb. The important numerical value in hypothesis testing isparametersample valueconclusioninterpretation
- An entomologist writes an article in a scientific journal that claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light. A) H 0 : p > 0.0016 H 1: p ≤ 0.0016 B) H 0 : p = 0.0016 H 1: p > 0.0016 C) H 0 : p = 0.0016 H 1: p < 0.0016 D) H 0 : p < 0.0016 H 1: p ≥ 0.0016Women executives A company is criticized because only13 of 43 people in executive-level positions are women.The company explains that although this proportion islower than it might wish, it’s not surprising given thatonly 40% of all its employees are women. What do you think? Test an appropriate hypothesis and state your con-clusion. Be sure the appropriate assumptions and condi-tions are satisfied before you proceed.A physician hypothesizes that females have higher systolic blood pressure than males. The physician obtains the blood pressure from a sample of patients during their annual check-up. Below is the systolic blood pressure for the sample. What can be concluded with an α of 0.01? male female 1061199810510013210911398105 13710594115127122131124111136 A)Obtain/compute the appropriate values to make a decision about H0. Critical Value= Test Statistic= B) Compute the corresponding effect size(s) and indicate magnitude(s). d= r2=
- . A research center claims that at least 23% of adults in a certain country think that their taxes will be audited. In a random sample of 900 adults in that country in a recent year, 19% say they are concerned that their taxes will be audited. At α=0.01, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H0 and Ha.The number of planes to arrive at the Dubai International airport over N days were recorded and imputted into MINITAB for analysis. Exibit 1 was subsequently generated. Exhibit 1 stem - and leaf display: no. of arrival leaf unit = 1 N =* 5 2 01123 10 2 56899 * * 3 0001123 ( * * * ) 3 6666678888 12 4 01134 7 4 57789 2 5 00 i. Calculate the missing *, ** and *** ii Find the value of the a. Median b. Highest value c. Mode Using the stem and leaf diagram in Exibit 1, i. Form a frequency table by identifying the class intervals implicitly Using the table created in 2ci) above ii. calculate the sample mean iii. calculate the sample variance NB. please show all workings, preferably typewritten answer!a. When John F. Kennedy was elected to the presidency, he received 49.72% of the68,838,000 votes cast. The collection of all of those votes is the population being considered.Is 49.72% a parameter or a statistic?b. Part (a) gives the total votes cast in the 1960 presidential election. Consider the total num-bers of votes cast in all presidential elections. Are those values discrete or continuous?c. What is the number of votes that Kennedy received when he was elected to the presidency?