Mathematics, 12.11.2020 16:20 ayoismeisjjjjuan
Aanya wrote the four equations that are shown below. A 6 x minus 8 = 4 (x minus 2) + 2 x B 3 (x minus 1) + 2 x = 3 (x minus 1) + 2 C 7 x + 2 minus x = 6 (x + 2) D 4 (x + 3) + x = 5 (x + 1) + 7 She examined them, without solving them, to determine which has exactly one solution. Which of Aanya's equations has exactly one solution?
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
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 01:00
Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?
Answers: 1
You know the right answer?
Aanya wrote the four equations that are shown below. A 6 x minus 8 = 4 (x minus 2) + 2 x B 3 (x minu...
Questions
Mathematics, 22.11.2019 23:31
Chemistry, 22.11.2019 23:31
