Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.
Yes,<span>the famous </span>geometric construction<span> </span><span> a pair of compasses, an unmarked ruler, and (of course!) a pencil and an </span>eraser<span>.</span>
Bracelet
There are 2 bracelets and she possibly picks three. :)
Answer: $42.60
Step-by-step explanation:
Original price: p
Discount: 30%
Sale price: 29.82
p x 0.7 = 29.82
p = 29.82/0.7 = 42.60
Step-by-step explanation:
Coaches are typically sized to a height of 4.38 meters, whereas 'high-bridge' vehicles are usually around 20 centimeters higher. At an average height of 18.65 metres, integrated double-deckers are often permitted .
