Questionnaire 0

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Questionnaire 0

Open until 19.3.23, 08:00

Name: *

ID: *

What is the std of the following distribution?

Use the PDF from the self-learning recitation.

20 points

1.63

2.01

2.78

0.52

I toss a coin twice. If x represents the number of heads, what is the CDF of x between 1 and 2?

20 points

1/2

3/4

1/4

Given the two EEG signals from two channels, calculate the Covariance and the Pearson Correlation:

Channel1: [22,48,76,10,22,4,68,44,10,76,14,56]

Channel2: [63,39,61,30,51,44,74,78,55,58,41,69]

20 points

Cov=123.6; Rho=0.23

Cov=346.1; Rho=0.73

Cov=207.5; Rho=0.57

Cov=73.8; Rho=-0.64

A student is trying to hitch a lift. Cars pass at random intervals, at an average rate of 1 per minute. The probability of a car giving a lift is 1%. What is the probability that the student will still be waiting:

a. after 60 cars have passed?

b. after 1 hour?

20 points

a. 54.7% b. 54.9%

a. 35.2% b. 9.3%

a. 43.6% b. 27.2%

a. 79.8% b. 82.3%

Choose the right claim regarding the following histogram: *

20 points

The distribution is negatively skewed and leptokurtic

The distribution is positvely skewed and playkurtic

The distribution is zero skewed and playkurtic

The distribution is positively skewed and mesokurtic

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