 , 02.12.2019 17:41 zurfluhe

# Bill alther is a zoologist who studies anna's hummingbird (calypte anna).† suppose that in a remote part of the grand canyon, a random sample of six of these birds was caught, weighed, and released. the weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 the sample mean is x = 3.75 grams. let x be a random variable representing weights of hummingbirds in this part of the grand canyon. we assume that x has a normal distribution and σ = 0.72 gram. suppose it is known that for the population of all anna's hummingbirds, the mean weight is μ = 4.55 grams. do the data indicate that the mean weight of these birds in this part of the grand canyon is less than 4.55 grams? use α = 0.10. (a) what is the level of state the null and alternate hypotheses. will you use a left-tailed, right-tailed, or two-tailed test? select a, b, c, or d a. h0: μ = 4.55 g; h1: μ < 4.55 g; left-tailed b. h0: μ < 4.55 g; h1: μ = 4.55 g; left-tailed c. h0: μ = 4.55 g; h1: μ ≠ 4.55 g; two-tailed d. h0: μ = 4.55 g; h1: μ > 4.55 g; right-tailed (b) what sampling distribution will you use? explain the rationale for your choice of sampling distribution. select a, b, c or d a. the student's t, since n is large with unknown σ. b. the standard normal, since we assume that x has a normal distribution with unknown σ. c. the student's t, since we assume that x has a normal distribution with known σ. d. the standard normal, since we assume that x has a normal distribution with known σ. what is the value of the sample test (round your answer to two decimal places.) (c) find (or estimate) the p- (round your answer to four decimal places.) ### Another question on Mathematics Mathematics, 04.02.2019 08:05
The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately​ bell-shaped. compare the​ z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular​ year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the​ z-scores for each. best actor: z equals best supporting actor: z equals ​(round to two decimal places as​ needed.) interpret the​ z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the​ mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the​ mean, which (is is not) unusual. Mathematics, 03.02.2019 02:52
Solve the triangle. a = 21°, c = 105°, c = 5 Mathematics, 01.02.2019 08:11
A15 foot ladder is leaning against the side of a building. the angle of elevation between the ground and the ladder is 75.5 how high up the side of the building does this ladder reach? round to the nearest tenth. Mathematics, 01.02.2019 07:33
Travis has decided to budget his spending money. he can spend no more than \$143.15 every month. he has also decided to spend 5.2 times as much money on video games as he spends on the movies.what linear inequality describes this problem
Bill alther is a zoologist who studies anna's hummingbird (calypte anna).†
suppose that in a...
Questions       Mathematics, 22.09.2016 07:47             Questions on the website: 6511714