In the z-score formula, which of the following is true if the value in the numerator is a negative value? A) the xi value lies to the left of the mean
B) the mean is of lesser value than the xi value
C) the mean is of negative value
D) the numerator value cannot be divided by the standard deviation

Three coins are flipped. what is the probability that there will be at least two tails?

Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?