Mathematics, 21.04.2021 21:50 GreenHerbz206
1.
Maribel surveyed 55 people to find out their favorite types of music. The results are shown in
the bar graph
Favorite Types of Music
Number of People
18
16
14
12
10
8
6
4
2
0
Country
Rock
Jazz Opera
Type of Music
a. What percent of the people like Country and Opera combined?
Answers: 2
Mathematics, 21.06.2019 20:00
For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.
Answers: 1
Mathematics, 22.06.2019 00:00
(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?
Answers: 2
Mathematics, 22.06.2019 05:00
Construct and interpret a scatter plot of the data collected by a travel agency. if a relationship exists,make a conjecture about the number of visitors in month 12
Answers: 3
Mathematics, 22.06.2019 06:00
Astore sells a 28 oz. bottle of shampoo for $1.96. it also sells a 22oz. bottle of shampoo for $1.92 which bottle is the better deal?
Answers: 1
1.
Maribel surveyed 55 people to find out their favorite types of music. The results are shown in<...
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