Q. 3 We are given the following data for a city: Population of the city on March 30, 2020 = 183,000 Number of new active cases of TB occurring between January 1 and June 30, 2020 = 26 Number of active TB cases according to the city register on January 1, 2020 = 264 Find the (i) Cumulative incidence of active cases of TB for the 6-month period; (ii) Prevalence of active TB as of June 30, 2020.

Suppose that we want to determine if the average amount of timespent online by the students is lessthan 4.5 hours/day. To this end, weconduct a survey of students and askthem how long they spend online perday. We obtain the following results:4.1, 4.3, 4.3, 4.5, 4.6, 4.3, 4.1, 4.6,4.7, 4.6, 4.7, 4.1, 4.3, 4.3, 4.5, 4.6,4.3, 4.1, 4.6, 4.7, 4.6, 4.7, 4.5, 4.6,4.3, 4.1 Assume that the number ofhours spent online has a normal distribution. Test your hypot

Which of the following is the most appropriate type of chart for determining the number of observations at or below a specific value? Select one: a. A histogram. b. A pie chart. c. A time-series chart. d. A cumulative frequency ogive.

Read the following prompt and complete 3.a and 3.b

Consider the following data set: i X 1 -4 23410 5 -2 0 2 4 Y₁ -10.672 -6.428 -2.242 1.946 7.596

Light Conditions   Weather Daylight ​Dark, but Lighted Dark ​Dawn/Dusk Other   Normal ​14,307 5875 8151 1183 65   Rain 875 497 681 87 8   ​Snow/Sleet 219 51 156 17 2   Other 125 54 220 40 9   Unknown 810 255 548 71 133

Which of the following is not equivalent to the other three? Choose the correct answer below. O Dependent variable Independent variable 000 O Predictor variable O Explanatory variable

refer to the following: For countries listed in the Human Development Report, the correlation between the percent of people using the Internet and per capita gross domestic product (GDP) is 0.888. The correlation (r) between the percent of people using the Internet and the percent using cell phones is 0.818. The correlation between the percent of people using the Internet and the literacy rate is 0.669. The correlation between the percent of people using the Internet and the fertility rate is -0.551. 10) Which variable (GDP, percent using cell phones, literacy rate, or fertility rate) has the strongest linear association with Internet use? Which variable has the weakest linear association with Internet use? Strongest: Weakest:

If we multiply the data values by a constant (say, c), how this will affect the geometric mean? Use the equation in image to prove it, and give an example.

A population data set produced the following information. N = 250. Ex = 9980, Ey = 1455, xy = 85,040 E2 = 486,820, and = 136,745 Find the values of oe and p?. Round oe to four decimal places and p? to three decimal places. i