Question 3 Mr. Covax is conducting a study about the effectiveness of using algebra tiles in teaching factoring among the Grade 8 Not yet students. He grouped the students homogeneously according to their mathematical ability. answered Marked out of 1.00 Flag Select one: question O a. cluster random sampling O b. simple random sampling O c. systematic random sampling O d. NO ANSWER O e. stratified random sampling Question 4 A systematic sampling is a sampling technique in which a list of elements of the population is used as a sampling frame and Not yet the elements to be included in the desired sample are selected by skipping through the list at regular intervals. answered Marked out of 1.00 P Flag Select one: question a. NO ANSWER O b. FALSE O C. TRUE Question 5 The Philippine Senate is composed of 24 senators. Not yet answered Marked out of 1.00 Select one: P Flag O a. STATISTIC question O b. PARAMETER c. NO ANSWERQuestion 7 In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding Not yet answered standard score of 69. Marked out of 1.00 Select one: P Flag O a. -3 question O b. NO ANSWER O C. 3 O d. 1.5 O e. -1.5 Question 8 Find the area under normal curve to the left of -1.85. Not yet answered Marked out of 1.00 Select one: P Flag O a. 0.9678 question O b. 0.0322 O c. 0.1064 O d. NO ANSWER O e. 0.4678 Question 9 Suppose the wait times at a doctor's office are normally distributed, with mean of 30 minutes and a standard deviation of 10 Not yet answered minutes. How many people wait more than an hour? Marked out of 1.00 P Flag Select one: question O a. 50.13% O b. NO ANSWER O c. 49.87% O d. 99.87% O e. 0.13%Question 10 Find the area under normal curve to the right of -1.05. Not yet answered Marked out of 1.00 Select one: P Flag O a. question 0.4332 O b. NO ANSWER O c. 0.8531 O d. 0.1469 O e. 0.3531 Grade 11 Set B / Grade 11 Statistics and Probability / LEARNING PLAN 4: SAMPLING Question 1 Not yet Natividad is a barangay health worker in her barangay. Identify what sampling method is applied if she asks every four answered houses in the village for the ages of the children living in their households. Marked out of 1.00 P Flag Select one: question a. cluster random sampling b. systematic random sampling O c. stratified random sampling O d. simple random sampling Question 2 In recent research that was conducted in a private school, the subjects of the study were selected by using Table of Random Not yet answered Numbers. Marked out of 1.00 P Flag Select one: question a. stratified random sampling O b. systematic random sampling O c. simple random sampling O d. NO ANSWER O e. cluster random samplingQuestion 4 A certain type of flashlight battery lasts on the average of 5 years with a variance of 0.5625 year. Assuming that the battery Not yet answered lives normally distributed, find the probability that a given battery will last less than 3.5 years? Marked out of 1.00 Select one: P Flag O a. NO ANSWER question O b. 97.72% O c. 47.72% O d. 2.28% O e. 52.28% Question 5 Kirisaki's score in Statistics is 1 standard deviation above the mean, while his score in English is 1.4 standard deviation Not yet answered above the mean. What conclusion can you derive on the given situation? Marked out of 1.00 P Flag Select one: question O a. Kirisaki performed poorer in English than in Statistics. O b. Kirisaki performed equally in English than in Statistics. O c. Kirisaki performed better in English than in Statistics. O d. Kirisaki performed poorly in both subjects. O e. NO ANSWER Question 6 A certain golf course has a mean score for professionals of 71.4 with a standard deviation of 1.8 which follows a normal Not yet answered distribution. What percent of professionals should shoot scores lower than 68? Marked out of 1.00 Select one: P Flag O a. question 2.94% O b. 1.89%% O c. 47.06% O d. NO ANSWER O e. 97.06%Question 6 Based on a sample of 1,200 surveyed students, it was found out that 20% of them needed financial aids. Not yet answered Marked out of 1.00 Select one: Flag a. NO ANSWER question O b. STATISTIC O C. PAAMETER Question 7 Cluster sampling involves the selection of every kth element in the population until the desired number of elements in the Not yet answered sample is obtained. Marked out of 1.00 P Flag Select one: question O a. NO ANSWER O b. FALSE O C. TRUE Question 8 The mean consumption of all the families in the barangay. answered Marked out of 1.00 Select one: P Flag O a. STATISTIC question O b. NO ANSWER O c. PARAMETERQuestion 1 The weekly income of assistance managers of our local banks are normally distributed with a mean of P40,000 and a Not yet answered variance of P25,000. What is the standard score for an income of P30,000? Marked out of 1.00 P Flag Select one: question O a. NO ANSWER O b. -.04 O c. -0.4 O d. - 2 O e. 2 Question 2 What is the probability that a normal distribution random variable will be within z = 1 1 standard deviation of its mean? Not yet answered Marked out of 1.00 Select one: P Flag O a question 68.26% O b. 65.87% O c. NO ANSWER O d. 34.13% O e. 31.74% Question 3 Find the area under normal curve between z = -2.51 and z = 0.21. Not yet answered Select one: Marked out of 1.00 O a. P Flag 0.6126 question O b. NO ANSWER O c. 0.5812 O d. 0.4712 O e. 0.5772Question 9 The mean GWA of 89.55 of the group of 45 Grade 11 students. Not yet answered Marked out of 1.00 Select one: P Flag a. PARAMETER question O b. STATISTIC c. NO ANSWER Question 10 A researcher interviewed people from each town in the province of Cagayan for his research on population. Not yet answered Marked out of 1.00 Select one: Flag a. simple random sampling question O b. cluster random sampling O c. systematic random sampling O d. stratified random sampling