Answer
In order to create the circuit, you need to convert the value from decimal, 170, to the binary representation of 170. Then, after applying a Hadamard gate to all the qubits, except the ancilla qubit, to which you will first apply a NOT gate followed by a Hadamard, apply a CX gate to each qubit that is represented by the binary value 170, which is represented by the value 10101010. So, you would apply a CX gate to each of the odd qubits, where the control of each CX gate is set to qubit 1, 3, 5, and 7 and the target of each CX gate is the ancilla qubit. Then, apply a Hadamard gate followed by a measurement operator to all qubits, except the ancilla qubit.