Mathematics, 21.11.2019 07:31 champ1135
According to a lending institution, students graduating from college have an average credit card debt of $4,100.a random sample of 40 graduating seniors was selected, and their average credit card debt was found to be $4,455.assume the standard deviation for student credit card debt is $1,100. using α=0.01a. does this sample provide enough evidence to challenge the findings by the lending institution? determine the null and alternative hypotheses. h0: (μ< ,> ,≠,≥,≤,=) ish1: μ (=,≤,< ,≠,≥,> ) isb. the z-test statistic is(round to two decimal places as needed.)c. the critical z-score(s) is(are)(round to two decimal places as needed. use a comma to separate answers as needed.)d. because the test statistic (is greater than the critical value, is less than the critical value, does not fall within the critical values, falls within the critical values), (reject, do not reject) the null hypothesis. e. determine the p-value for this test. the p-value is(round to three decimal places as needed.)
Answers: 3
Mathematics, 21.06.2019 17:00
Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²
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Mathematics, 21.06.2019 18:20
Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315
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Mathematics, 21.06.2019 21:50
Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x
Answers: 3
According to a lending institution, students graduating from college have an average credit card deb...
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