At a gas station in France, the price of gasoline is 1.38 euros per liter. What is the price in dollars per gallon? 1 gal = 3.785 L $1US = 0.80 euros
At a gas station in France, the price of gasoline is 1.38 euros per liter. What is the price in dollars per gallon? 1 gal = 3.785 L $1US = 0.80 euros
During the period of 6 months, the price of gasoline increased 27%. Then, for the following 6 months, the price has decreased by 18%. By how much has the price of gasoline change over this 12 months...
Its a probability problem and I have to find the probability of how many students don't do their homework
The dataset has 425 cases and 12 variables pertaining to past and current customers who have borrowed from a bank for various reasons. The dataset contains customer-related information such as financial...
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean...
A company surveyed 600 people for a new retirement plan. 235 employees prefered the new plan. What is the employee population proportion that would agree to the new plan? Find a confidence interval...
In a randomized controlled trial in Kenya, 343 infants used bednets and 15 devloped Malaria. 294 infants did not use bednets and 27 devloped Malaria. With a significance level of 0.01, test the claim...
if a woman who takes the math portion of the sat is randomly selected what is the probability that her score is above 500
A two-tailed test is performed at a 5% level of significance. The p-value is determined to be 0.09. The null hypothesis
Read the t statistic from the table of t distributions and circle the correct answer. A one-tailed test (upper tail), a sample size of 18 at a .05 level of significance t =
From a population of 200 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is determined that the sample mean is 56. The standard error of the mean is
X is a normally distributed random variable with a mean of 8 and a standard deviation of 4. The probability that x is between 1.48 and 15.56 is
Given that z is a standard normal random variable, what is the value of z if the area to the right of z is 0.1112?
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
A random sample of 25 exams was taken. The average score in the sample was 76 w/ a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average...
The t value with a 95% confidence and 24 degrees of freedom is
Z is a standard normal random variable. The P(1.20<= z <=1.85) equals?
Z is a standard normal random variable. The P(z>=2.11) equals?
Weights of a certain model of fully loaded gravel trucks follow a normal distribution with mean μ=6.4 tons and standard deviation σ=0.3 ton. What is the probability that a fully loaded truck of this...
Out of 2100 students in a random sample, 656 enjoyed hard rock music the most. Construct a 90% confidence interval for the population percentage of students that like hard rock.