i would like some help with multiple choice. thank you in advance.

1. The city health department initiated a program to measure the prevalence of radioactive radon gas in the basements of houses in the city. One of the Geiger counters used in the study was defective and always measured too high. This is an example of a. Non-response bias Sampling bias c. Measurement bias d. Response bias A z-score measures a. How many standard deviations a value lies from the median . The spread of data around the mean c. The probability that a particular value of the variables will occur d. How many standard deviations a value lies from the mean 3. The mean of a data set is 12.5 cm, and the variance is 4.0 cm. What is the z-score of 9.5? a. 1.5 b. -1.5 C. . -0.75 d. 0.75 4. Which data is considered aggregate data? a. The number of cars passing in front of the school in every 5 minute interval b. The class average mark in each of these data management classes The exam marks collected by the teacher of a class d. The license plate numbers of the cars in the school parking lot 1. Cesare collects fees at the Sunny Beach parking lot. He notices a strong positive correlation between the total parking revenue in late summer and the size of the watermelons being sold at the fruit stand across the city. This is likely a. An accidental relationship b. A common cause relationship A presumed relationship d. A reverse cause and effect relationship 2. For a cause and effect relationship between two variables, which statement must be true a. The effect may occur without the cause taking place b. The cause may occur without the effect taking place c. The cause must occur before the effect d. All of these are true 3. A roulette wheel contains 18 black slots, 18 red slots, and 2 green slots. Ravenel repeatedly wagers that the ball will finish in a red slot. The distribution of wins is modelled using a normal approximation. In 200 spins, what is the expected mean number of wins? a. 7 95 C. 105 50 4. A positive correlation exists between the price of artichokes at the local supermarket and the attendance at the local amateur theatre. This is likely a. A common cause relationship b. A reverse cause and effect relationship C. A presumed relationship d. An accidental relationship