27 Answered Questions for the topic Elementary Statistics
Given two proportions of males and females that recently completed their SATs, determine if these two proportions are significantly different from one another.Male percentage above the 90th... more
Question 1. How I construct frequency and relative distribution?
using this table for Number of Arrivals at Wendy's: first column: 7, 5, 2, 6, 2, 6, 6, 4 second column: 6, 6, 7, 5, 2, 2, 8, 6 Third column: 6, 6, 1, 5, 9, 6, 2, 9 forth column: 6, 11, 2, 3, 7, 5,... more
Use technology and the given confidence level and sample data to find the confidence interval for the population mean . Assume that the population does not exhibit a normal distribution. Weight... more
Assume 43% of us have group O blood. A hospital is conducting a blood drive because it’s supply of group O blood is low, and it needs at least 196 donors of group O blood. If 446 volunteers donate... more
Use a normal approximation to find the probability of the indicated number of voters. In the case, assume that 183 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed... more
Binomial probability distribution
Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will... more
Elementary Statistics Probability & Statistics
Question in description
Question Help A candy company that makes colored candies claims that 10% of the candies it produces are green and that bags are packed randomly. In a really large bag of candies, we found 12% of... more
Question is in the description below.
speed of automobiles on a certain stretch of freeway at 11:00 PM are normally distributed with mean 65 mph. Twenty percent of the cars traveling at speeds between 55 and 65. What percentage of the... more
When a particular penny is held on its edge and spun, the probability that heads are face up when the coin comes to rest is 4/9. If the coin is spun four times,
can you please give the equation used and give step by step detail solve it all the way put please
We have to choose 6 numbers out of 49 that will hopefully match the 6 that are drawn. How many combinations of 6 numbers can be made out of 49?
There is a lottery game that we are playing. We have to choose 6 numbers out of 49 that will hopefully match the 6 that are drawn. How many combinations of 6 numbers can be made out of 49?
Need help with Statistics. I will pay for the help if needed by assignment will be due soon. Is to much.
In 1980 more than 35% of cars purchased had a manual transmission (i.e. stick shift). By 2007 the proportion had decreased to 7.7% . A random sample of college students who owned cars revealed the... more
FINDING THE PROBABILITY
THIS IS A STATISTICS PROBLEM FROM AN ELEMENTARY STATISTICS BOOK. a ferry will saffely accomadate 66 tons of passenger cars. assume that the mean weight of a passenger car is 1.7 tons with standard... more
find the range and standard deviation for .
49, 50, 60, 25, 35, 56, 6, 75, 140, 50, 42, 43, 94, 70, 39, 35, 50, 30, 15, 34, 25, 38, 38.5, 68, 8, 20, 26, and 40
Two tailed test
a researcher claims that the standard deviation of the number of deaths annually from tornados in the US is less than 35. If a random sample of 11 years had a standard deviation of 32, is the claim... more
Survey Statistic Problem
I have no idea how to solve this. Someone please explain to me. 427 different women were randomly selected and asked what they buy online, and 162 of the women says clothes. If 10... more
Student t Distribution Problem
Question/Problem: Data Set 1 in Appendix B lists the white blood cell counts (1000 cells/µL) of 40 randomly selected women. The mean of those 40 values is 7.15 and the standard deviation is 2.28.... more
How to find the probability of selecting a particular dime? and relate to probability of winning the lottery?
So the math problem says: Identify the lottery rules of California and show the probability of winning the grand prize. Then relate the probability to something tangible and concrete, such as... more
pizza parlor say they offer five toppings:onions,pepperoni,sausage,green peppers and mushrooms.they say they have over 30 different kinds of pizza.true or false
5 toppings and a sign that says 30 different kinds of pizza. True or false?
Figuring out the mean, median, mode and midrange
Listed below are the playing times (in seconds) of songs that were popular at the time of this writing. Find the (a) mean, (b)median, (c) mode, and (d) midrange for the given sample data. Is there... more
Stats help Mult
1)In a t test for dependent means, 15 participants are each tested twice. This makes a total of 15 "before" scores and 15 "after" scores. What are the degrees of freedom? a. 15 b. 14 c. 30 d.... more
Stats Help help
1)You conducted a t test for independent means, and found that the t score equaled 0. This means that a. the two population means must be equal. b. the two population variances must be equal. c.... more
Multiple Choice Question
The most likely way for a t test to be presented in a research article for a study with 25 participants is a. t (25) < significant b. t (25) = 3.01, p < .05 c. t (24) = 2.94, p <... more
Statistics in Human Behavior
The mean of a self-worth measure in the population of adult males is 30.00. A researcher is interested in whether females report differing levels of self-worth. The researcher randomly samples 150... more
Stats Help Please
A researcher is interested in increasing feelings of self-confidence in adolescents. He randomly selects 100 adolescents from the population and randomly assigns 50 individuals to a treatment... more