Please need done asap

01 2 (1 point} Which of the following is not a characteristic of a continuous random variable? Continuous random variables have graphs that are smooth curves Continuous random variables can take fractional or decimal values Continuous random variables can be determined using counting principles Continuous random variables arise from situations that involve measurement Q13 (1 point} A Company produces bags of potato chips with a labelled mass of 355 g. In reality, not all the bags have a mass of exactly 355 g, but they must be within a reasonable range of 355 g to maintain their business license. The company must perform regular quality control to ensure that the bags have close to 355 g. One hundred bags are randomly selected and their masses are recorded. The probability histogram shown below indicates the percentage of the randomly selected bags of chips whose masses fell within a specific range. Bags of chips (%) 8 3 '6 8 3 n-HN O 350 352 354 356 358 360 365 Actual mass (g) Which ofthe following conclusions can be determined from the given histogram? The percentage of the randomly chosen bags of chips with a mass between 354g and 357 g The percentage of the randomly chosen bags of chips with a mass greater than 355 g The probability that a randomly chosen bag of chips will have a mass of exactly 356 g Q18 (1 point) Which oi the following measures will definitely not change if the data set were increased by adding an extra smallest value and an extra largest value to the set? Only mean Only median Only the mean and the median The mean. the median and the standard deviation 020 (1 point) The lifetimes for a certain brand of light bulb are normally distributed with a mean lifetime of 700 hours and standard deviation of 20 hours. If the light bulb has a zscore of 1.6, then its life time, to the nearest hour, will be 22 hours 732 hours 668 hours 32 hours Q7 (1 point) The following figure represents a street map A B C If you can travel only west to east or north to south on the streets, how many different routes could you take from point A to point C that passes through point B? 5 0 8 15 38 Q8 (1 point) There are 6 red balls and 7 black balls in a bag. If two balls are randomly selected, without replacement, from the bag, what is he probability that both balls are red or that both balls are black? O O 35 O 85 169 O 35 676Q14 (1 point) The strength of a female athlete is normally distributed with a mean of 50 and standard deviation of 10. In which interval do the middle 68% of the female athletes score? 30 to 70 40 to 60 30 to 50 50 to 70 015 (1 point) Let us assume you are doing a study of the predominance of lefthandedness in your hometown, which has a population of 850000. Statistics show that about 9.8% of the population are left-handed. The mean, to the nearest whole number, and the standard deviation, to the nearest hundredth, for the population of the left- handed people in your hometown are. respectively H = 83300,J = 274.1] M = 83300,o = 7513.66 11 = 833000, 0- = 274.11 a = 833000, 0' = 75l3.66 Q16 (1 point) The owners of an amusement park would like to determine what percentage of patrons are returning customers. The customers enter the park one at a time and pass an attendant who takes their tickets. A suitable survey question could be asked at that time. Not every customer would be asked because the attendant wants to keep the line moving at a steady rate. The sampling method that would likely be used is simple random sampling convenience sampling volunteer sampling systematic sampling 017 (1 point) Which of the following characteristics is found in an effective survey? The questionnaire is designed to avoid bias The random sampling technique is well designed and the sample represents the population. The wording of the questions takes into account privacy laws All of the above