Each of the digits in a raffle is thought to have the same chance of occurrence. The table shows the frequency of each digit for consecutive drawings in a California lottery. Perform the chi-square test to see if you reject the hypothesis at the 0.05 significance level that the digits are from a uniform population.   Digit Frequency Digit Frequency 0 43 5 46 1 41 6 39 2 45 7 40 3 41 8 39 4 47 9 29       a. State the decision rule. Use 0.05 significance level. (Round your answer to 3 decimal places.)   H0: The digits are uniformly distributed. H1: The digits are not uniformly distributed.       b. Compute the value of chi-square. (Round your answer to 3 decimal places.)       c. What is your decision regarding H0?

If the variance is 64, then what will be the value of o? O a. 4096 O b. 128 Oc.8 O d. 32

You may need to use the appropriate technology to answer this question. Five typists were selected to test two types of computer keyboards. The following table shows the number of words per minute for each typist using each keyboard. Typists Keyboard A 59 60 62 so 51 68 67 60 63 62 Consider the types of keyboards as treatments and the typists as blocks, test to see if there is any difference in the mean words/minute of the two types of keyboards. Let a- 0.os. State the null and alternative hypotheses. O Moi HTypist i #rypst 2"typist 3"Prypist 4ryoists H At least two of the typists have a different population mean ords/minute. OHo Hkeyboard 1* Pkeyboard 2 H Mevboard 1 eyboard 2 Ho HKeyboard 1" Pkeyboard 2 HMkeyboard 1 Peyboard 2 O Ho "Tyist i- Hrypist 2rypist " rypist 4iypist 5 H PTypist 1* HTypet 2 Prypint a* PTysiat 4* "typist s OHa At leest two of the typists have a different population mean words/minute. H Hryput iPryon a "Typst a "typst" Hrvpist S Find the value of the test…

Read the study below carefully.  Then answer the questions that follow by typing in the letter of the correct response.   Rhianna hears that watching ASMR videos on YouTube can help with insomnia.  She conducts a sleep study on 60 people who have difficulty sleeping by asking a simple random sample of 30 participants to watch at least 20 minutes of ASMR videos prior to sleeping and the remaining 30 participants to attempt to sleep without watching any videos.  During the study, the subjects are connected to an EEG machine, which is used to measure brain activity.  Rhianna analyzes the EEG results and concludes that those who watched the ASMR videos experienced a better quality of sleep than those who did not.   i.   Identify the treatments in Rhianna’s study. A.   being connected to an EEG machine B.   experiencing difficulty sleeping C.   watching at least 20 minutes of ASMR videos D.   watching at least 20 minutes of non-ASMR videos E.    watching no videos prior to sleep F.    all…

A random sample of 1756 Texas government employees were selected for a study on race.  The table below shows the results of the survey. Observed Frequencies of Race from the Sample Outcome Observed Frequency White 720 Hispanic 755 Black 158 Other 123 The racial distribution for the state of Texas is shown in the second column below.  Fill in the expected frequencies.  (Round to the nearest whole number). Frequencies of Race Outcome Expected Percent Expected Frequency White 42   Hispanic 40   Black 10   Other 8

I need help with question 7

Solve for the p-value.

The city of Hampton is surveying households to see if the number of cats per household has changed over the past decade. The last known average of cats per household was 1.08. What statistical procedure should you use to analyze these data? O one sample z test Oone sample t test O correlated groups t test O independent groups t test

Is there an association between hair color and body type? The table below shows the results of a researcher's observations of randomly selected people. Frequencies of Hair Colors for Various Body Types Blonde Brunette Red Head 71 80 96 108 55 115 46 91 Short and Slender Short and Pudgy Tall and Slender Tall and Heavy What can be concluded at the o= 0.01 significance level? 53 74 69 63

Anxiety when taking math tests is a common problem. If I want to study this issue, which of the following describes the best way to find out the proportion of students who suffer from math anxiety? O Select students who have scored poorly in math classes at CCBC. Poll students as they enter campus on a randomly selected day. Talk to students randomly pulled from the list of all students. Interview students who have finals on the first day of finals week.