21 day ago

A random sample of 35 undergraduate students who completed two years of college were asked to take a basic mathematics test. The

mean and standard deviation of their scores were 75.1 and 12.8, respectively. In a random sample of 50 students who only completed high school, the mean and standard deviation of the test scores were 72.1 and 14.6, respectively. Estimate with 90% confidence the difference in mean scores between the two groups of students. Assume the populations are approximately normal and σ1^2 ≠ σ2^2

Mathematics

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Would $3.99$ million flies or $47,000,000$ ants have a greater mass? Approximately how much greater, in grams, would the greater

zzz [12365]

Answer:

Ants weigh approximately 118,615,000mg more.

Step-by-step explanation:

Based on a quick search, the average housefly weighs around 11.5mg, while an ant averages at 3.5mg. With these average weights, we can calculate the total weight of each species.

Flies: 3,990,000 * 11.5mg = 45,885,000mg

Ants: 47,000,000 * 3.5mg = 164,500,000mg

Consequently, it's clear that the 47 million ants possess a greater mass, specifically

164,500,000 - 45,885,000 = 118,615,000mg more

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4 months ago

If we collect experimental data on alcohol consumption from the same 100 individuals before and then after a course on the dange

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