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,...
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...
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...
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...
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...
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...
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...
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...
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...
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.
Student t Distribution 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....
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...
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?
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.
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 <...
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...
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...
Please help to my Statistics question?
I'm getting confused about this things:
1. My teacher said that Nominal,Ordinal,Interval and Ratio has their own appropriate measures of location. for example: For Nominal the appropriate measures...